Introducing the BobTail®, the epitome of advanced fastening technology. Designed to tackle the demands of diverse assembly applications, the Huck® BobTail® combines safety, quiet operation, and a unique pintail-less design. This exceptional fastener delivers unmatched performance and reliability. Available in various sizes, both in Grade 5 and Grade 8, the BobTail® meets the challenges head-on, ensuring secure and efficient fastening solutions.
What are the Advantages of Using Huck® Bobtails®?
With Huck® BobTail®, fasteners can be securely installed in under two seconds each, providing unparalleled installation efficiency. Moreover, Huck® BobTail® exhibits exceptional fatigue strength, exceeding conventional nuts and bolts by a factor of five.
The BobTail stands out with its unique, no-break-off pintail, providing exceptional corrosion resistance in its class. It incorporates advanced, low-swage technology that allows for easy installation with a lightweight and ergonomic Huck® Bolt® tool. When considering the total cost of blind fasteners, including installation and inspection labour, the BobTail often delivers a lower overall installed cost.
Here are some advantages of using Huck® Bobtail® for easy and everlasting impact.
Rapidly Installed: Typically completed in less than two seconds
The no-break pintail stands out for its exceptional corrosion resistance, ranking as the best in its class.
Rapid visual examination guarantees a high-quality connection.
Huck® Bobtail® Installation Process
Huck® Bobtail® uses an easy installation process to give quick and lasting efficiency. Here are some installation advantages that Huck® Bobtails® provide.
The pintail-less design provides several advantages. It reduces noise and eliminates waste, resulting in improved corrosion resistance.
The installation indicator offers a visual representation of the successful installation process.
The collar material is permanently and vibration-proof connected by swaging it into the lock grooves.
Using low-swage technology, tooling is faster and lighter, and the ergonomically designed tooling improves longevity.
The easy installation process requires less time and lasts longer, saving time and energy. The four-step process is easy to understand and follow.
Secure the collar onto the pin by placing the pin in the designated hole, then rotating the collar onto the pin.
The installation Huck® Bolt® tool is designed for annular pull grooves. Upon activation, a puller located in the nose assembly draws the pin into the Huck® Bolt® tool, causing the swaging anvil to apply pressure on the collar, effectively closing any gaps in the sheet metal component.
Upon reaching a predefined force, the anvil initiates the swaging process, driving the collar into the pin’s lock grooves. This continuous swaging action extends both the collar and the pin, forming a precise and secure clamp.
Upon completion of swaging the collar into the pin lock grooves, the tool facilitates the ejection of thesefasteners and releases the puller, thus completing the sequence.
Conclusion
With no gap in the metal-to-metal contact, Huck® Bobtail® provides a secure connection that works even in the severest environments. Having tight security, the swaged Bobtail collar forms a connection that resists vibrations and lasts for years.
With the ease of installation, the Bobtail sets a new standard for utility and productivity. With its cost-effective and time-saving qualities, the Huck® Bobtail® represents a new class of Huck Bolts®.
Invented by Louis C. Huck in the year 1944, Huck Bolt® was initially only used as an aerospace solution. But with its high durability and vibration resistance, the product’s popularity rose and spread through the transport and heavy machinery industry. These advantages, when combined with easy installation and removal have only worked in favor of Huck Bolts®. Today, even the removal is made easy with the Huck Bolt® collar removal tool, so that once you are done, you can remove Huck Bolts® without any hassle.
The Industry’s Best Huck Bolts Installation Tooling
Designed to offer the highest levels of ergonomics, productivity, and long life, the Huck line of installation tooling reflects the same level of innovation and quality as its advanced fasteners. Whether it’s a Huck hydraulic tool employed in the high-volume installation of large diameter HuckBolts, or a smaller pneudraulic model used to install blind rivets and small diameter HuckBolts, you can count on these tools to deliver the industry’s best value.
A Wide Selection of Tooling Options
Huck offers a broad selection of hydraulic and pneudraulic tools, and a new battery-powered tool, in addition to Powerig® hydraulic power sources. Huck hydraulic installation tools are available to install a wide range of fasteners, from structural blind rivets to the largest HuckBolts. The Huck line of pneudraulic tools, designed for use in repair work or lower volume production applications, can effectively pull fasteners ranging from 3/32″ blind rivets to 3/8″ HuckBolts. The new lightweight, easy-to-use BV4500-118 Huck Range Force battery-powered tool can install most Huck blind rivets and HuckBolts up to 1/4″ in diameter.
Given Below Are The Wide Range Of Tools:
Pneudraulic Tooling
244BT:
The 244BT tool is designed for rapid installation of Huck BobTail 3/16″ (5mm) and 1/4″ (6mm) diameters. This lightweight tool features minimal moving parts, provides fast, uniform installations, and delivers optimum stroke for the one-cycle installation of fasteners.
2025:
Featuring an ergonomically designed handle, plated piston rods, and an efficient in-line piston, the 2025 tool is ideal for high-volume production installation of blind fasteners and two-piece lockbolts, 1/4″ and a smaller diameter. An extended piston version (2025L) is available, and an optional vacuum assist pintail collection system (2025V) can also be added.
256BT:
Designed for quick installation of Huck BobTail fasteners, the 256BT tool features optimum stroke, one-cycle fastener installation, and minimal moving parts. The 256BT includes standard inline nose assemblies ranging from 5/16”.
256:
The Model 256 tool, designed for high-speed production applications, can install up to 20 fasteners per minute. This Huck tool helps install various fasteners from 3/16″ (5mm), 1/4″ (6mm), 5/16″ (8mm), and 3/8″ (10mm) blind fasteners and 2-piece lockbolts, including steel Magna-Grip fasteners. The Model 256 provides optimum stroke for one-cycle installations and features a concentric (inline) pull piston and front gland design that allows for easy piston removal. The 256 is factory-tested for 1000 cycles, ensuring the tool’s reliability, and its plated piston rods extend seal life and add to its overall durability. This proven production tool weighs only 11.1 pounds.
2022:
The Model 2022 is a lightweight, high-speed tool that is well-suited for both production and maintenance/repair applications where 1/4” and smaller diameter (standard and extended grip) blind fasteners are used. The 2022 features a long-stroke, in-line piston for production rates of up to 30 installations per minute. The 2022’s ergonomically designed handle and lightweight (5.4 pounds) combine to minimize operator fatigue.
Battery Tooling
2024:
Model 2024 is designed for production volume installation of 1/4” and smaller diameter blind fasteners. This established tool offers several outstanding features, including an ergonomically designed handle, plated piston rods, and an efficient in-line piston. An extended piston version (2024L) is available, and an optional vacuum assists pintail collection system (2024V) can be added.
BV4500-118:
The BV4500-118 Huck® Range ForceTM by Makita® battery tool features an electronically adjustable pull force from 0 – 4500 lbf and a long 1.18″ stroke to enable the installation of most structural and non-structural blind rivets and two-piece HuckBolt® fasteners up to 1/4″ in diameter. The 18V 5Ah battery is interchangeable with other Makita 18V batteries making this tool an ideal performer in portability, reliability, and versatility.
Hydraulic Tooling
SFBTT8:
Huck’s proprietary Swageforward® BobTail® Tool, the SFBTT, makes the installation process quicker and easier by reducing the force required to install each fastener. The SFBTT8 is designed to install 1/4″ (6mm), 5/16″ (8mm), and 3/8″ (10mm) fasteners.
More compact and lighter weight than previous HuckBolt production tooling, all Swageforward® BobTail® installation tools also offer greater operator flexibility as well as extended reach into difficult areas. For tight, space-constrained applications, these Huck Swageforward® BobTail® tools allow the operator to position his or her hand at a safe distance from the working structure during installation.
2480:
The Model 2480 is a very lightweight tool that provides for the high-speed installation of a wide range of HuckBolt® and Huck blind bolt fasteners. The tool has only one moving part, resulting in outstanding reliability and minimal maintenance. The tight centerline-to-edge measurement of the Model 2480 and its light weight (2.21 pounds) allows for its use in limited clearance areas.
2581:
Featuring a reliable 2-piece cylinder and handle design, the Model 2581 is a lightweight, high-speed production tool. The 2581’s hard plastic handle reduces the weight of the tool, while also ensuring that tool heat is not transferred to the operator. The simple construction of 2581, provides for increased reliability and minimal maintenance.
SF20:
Offering all of the features of the Huck Swageforward® BobTail® Tool line, the SF20, delivers the power to install 1/2″ (12mm), 14 mm, and 5/8″ (16mm) BobTail HuckBolts® in high-speed, production environments.
2582/2583:
In addition to incorporating many of the features of the 2581, both the Model 2582 and 2583 feature an eccentric piston that allows for an improved center-to-edge measurement for tight clearance applications. The Model 2583 has a longer stroke, providing for the one-cycle installation of a wide range of fasteners, including BobTails.
SF32:
The SF32 is Huck’s Swageforward® BobTail® Tool designed for production value installation of 3/4″ (20mm) BobTail fasteners.
SF46:
The heavy-duty SF46 Swageforward® BobTail® Tool is designed to install 7/8″ (22mm) – 1″ (25mm) BobTail® fasteners in a production environment.
3585/3585PT:
Offering durable construction, advanced hydraulics, and a safe, ergonomic design, both the Model 3585 and 3585PT installation tools provide for efficient installation of large diameter HuckBolts®. Both of these tools feature an improved piston and cylinder design for longer life. In addition, these tools’ nose adapters can be removed through the back of the tool for ease of repair. The Model 3585 is designed to install a wide range of fasteners, including C50L®s and BobTail® HuckBolts®, while the Model 3585PT can efficiently install BobTail®, HuckSpin®, and HuckSpin II fasteners.
Huck Powerig® Power Sources
Combining advanced design and quality manufacturing, Huck Powerigs® offers both best-in-class performance and long product life. Whether for mobile or factory use, there is a Huck Powerig® hydraulic power source for the job. Choose from electric- or gasoline-powered portable units or larger rigs that can individually power up to three tools.
940:
The Model 940 Powerig® is a portable unit sized for moderate production and repair applications. This model features rugged construction for durability in the field and the choice of 115 or 220 Volt AC power. The Model 940 includes a handle for easy transport, simple adjustable hydraulic outputs, and quick-connect couplers for connecting installation tool hoses.
SPECIFICATIONS
Width: 1.5 in.
Length: 12.5
Height: 18 in.
Weight: 74.5 lbs.
operational, 66 lbs. w/o hydraulic fluid
Power: electric, 115 or 220
volts, single phase
Flow Rate: 70 cu. in./min.
@ 5,000 psi
Reservoir Capacity: 1.5 gal
Options: 220V, 60/50 hertz
single phase, 250VDC, direct current
913F:
The Huck Model 913F Powerig® is a portable, gasoline-powered, hydraulic power source designed to operate all Huck hydraulic installation equipment in applications where an air or electric power source is not available. This Powerig® hydraulic unit includes a roll cage for protection and to facilitate moving the unit to various workstations. The unit weighs approximately 175 pounds (78.7 kg) when filled with hydraulic fluid.
SPECIFICATIONS
Width: 21 in.
Length: 24 in.
Height: 27 in.
Weight: 122 lbs. w/o
hydraulic fluid
Power: gasoline, Honda 5.5hp,
4 cycle, single cylinder air-
cooled engine, point condenser
ignition with 3 amp charging coil
Flow Rate: Pull 5800 psi, Max 8400 psi,
Return 2800 psi, Max 6000 psi Reservoir Capacity: 5 gallons
918/918-5:
The Model 918 and the 918-5 Powerigs® are the largest hydraulic units offered by Huck. Sized for high production applications, the Model 918 can operate up to two tools independently. The Model 918-5 can power up to three tools. These electrically powered models also deliver sufficient power to operate the tools up to 100 feet away. A 22-gallon reservoir stores hydraulic fluid, with a filter-strainer in the suction line to assure clean, filtered fluid.
SPECIFICATIONS
Width: 25 in.
Length: 44 in.
Height: 30 in.
Weight: 780 lbs. operational,
585 lbs. w/o hydraulic fluid
Power: electric, 220 or
440 volts 3 phase
Flow Rate: 2.0 GPM per tool station Reservoir Capacity: 22 gal
Bottom Line
Unlike the traditional nut and bolt, Huck Bolts® are a sturdy and permanent solution to the requirements of your heavy equipment. Every company has a different requirement depending upon the types of equipment they use. Apart from this, there are various other factors like the budget of the company to consider as well. Upon deciding on a suitable Huck Bolt®, all you will is an installation gun and a Huck Bolt® collar removal tool to simplify the process of installation and removal.
At Macros Fastening Systems, you get the solution to all your tooling problems and requirements. Being the sole certified distributor of Huck fasteners, installation tools, and SNEP nuts in India, the company focuses on the satisfaction of its customers and ensures quality above all! Want to know more about their products? Visit Macros Fastening Systems today!
One of the challenges in heavy machinery is optimizing machine output and reliable equipment. Working in an industry such as trucking, railroad, mining, construction and manufacturing can be high demand, so it is critical your equipment is safe and can perform at its best in harsh conditions and outdoor environments.
That’s why so many businesses trust Huck® fasteners for their feeders, trucks, truck trailers, buses, railcars, mining screens and other equipment. Backed by over a century of experience creating innovative fastener solutions, Huck® fasteners are precision engineered to provide permanent, vibration-resistant joining solutions for industrial applications.
A clean and safe alternative to welding and a more efficient fastening method compared to standard nuts and bolts, the shear strength of Huck® fasteners makes them reliable in situations where a joint is integral to the durability of your equipment’s structure.
What are the benefits of Huck® fasteners?
Huck® fasteners offer multiple benefits that other fastening methods cannot – they are the tough solution to most fastening problems.
Quick and easy installation using simple tools can reduce production time by up to 75%. It also means you don’t need to invest in specialists for installation.
The reliability of the fastener means that you don’t need to re-check or replace it, which reduces overall costs to your equipment.
Each Huck® bolt and structural rivet has its own characteristics, so there are products available for each unique application and need.
Huck® fasteners will not loosen, even under extreme vibration.
Welding can pose a potential risk to workers due to random sparks and the safety hazard of spent rods and remnants on the assembly floor. Huck® fasteners offer a safer, cleaner alternative.
Once the Huck® fasteners are installed, they can’t be removed without specialist tools.
Huck’s fasteners solve the problem of any fasteners or bolts loosening over time by creating a tight fit and local system that can withstand rugged conditions.
Minimal training is required for operators installing the fasteners, eliminating the dependency on an operator’s skillset. The need to torque or apply a specified rotation to a threaded fastener has been eliminated and, as such, lessens the degree of skill required to effect proper installation. Unskilled operators with minimal training can quickly achieve consistently high-quality structural connections from first installation.
Quality control measures are simple to implement, as operators can easily visually inspect the fastener for the correct locking collar swaging during installation.
You will experience less downtime caused by bolt loosening and equipment failure.
Equipment performance is directly affected by weight – saving weight in your equipment is essential. Huck® fasteners can help lighten the load by offering a higher strength solution, meaning you can use less fasteners or a smaller diameter Huck®. They also allow for the use of lighter weight aluminum instead of steel in the joining process.
How do Huck fasteners work?
High strength fastening systems are installed with either manual, pneumatic or hydraulic installation equipment, making it user-friendly for operators. Using the most advanced fastening technology to date with a unique lock-bolt design, the strength of the fasteners comes from the shear resistance of the collar material and the number of grooves it fills.
What industries do Huck® fasteners thrive in?
Huck® fasteners thrive in structural applications where the working environment is subject to shock, vibration and dynamic loading. They are relied upon by businesses in many industrial markets including truck, trailer, stock crates, bus, rail, bridge work, automotive, HVAC, green energy (such as wind farms), agriculture, grain silo’s, mining, oil and gas.
Blind Bolt Characteristics
Most blind bolts are designed with a steel pin, a collar, and a sleeve.
There are various characteristics to consider when choosing the right blind bolt. You need to choose the right grip range length and diameter for optimal strength and lasting performance. You usually can find the right blind bolt dimensions by consulting the manufacturer’s range chart. You also have to choose the right material. Most commercial blind bolts are made of steel, but there are alternate materials, such as stainless steel and titanium blind bolts, for specialty applications such as aerospace. Once you select the right blind bolt for the job, you will have an extremely strong and lasting joint.
In addition to being strong, Huck® blind bolts are resistant to vibration. Once installed, they will not work loose over time or weaken under constant shaking. That is why they have become the fastener of choice for airplanes, railway cars, automobiles, factory equipment, mining equipment, ships—any application in which the bond has to maintain a strong connection under ongoing vibration.
Another attractive feature is that blind bolts are tamper-proof. Because they are installed using special equipment and have no screw heads, they can’t be vandalized, making them ideal for use in public transit systems, public restrooms, public buildings, or anywhere vandalism is an issue. The core bolt itself is very hard, which makes it difficult to remove without special equipment from the manufacturer. If you have the right equipment, you can remove a Huck® blind bolt and leave the parent material and the pre-drilled hole undamaged.
A Brief History of Blind Bolts
Wooden planes could no longer meet the needs of aircraft design, so engineers started to design airplanes made of aluminum, a material that was stronger, yet light enough for aircraft design. Initially, these aluminum airplanes were made using solid rivets, which made assembly slow and required two workmen, one on each side of the material being assembled. To address the problem, Jacques Chobert, one of the engineers at Aviation Developments, created a new riveting technology, the Chobert® riveting system, which could be installed from one side by one worker. Installation was still slow because fasteners had to be loaded and installed one at a time, so Aviation Developments created a tool that could hold multiple fasteners, which considerably sped up production.
Since World War II, the blind bolt has evolved to become a mainstay of manufacturing. New materials were adapted, as were new head configurations and designs. New methods were developed to machine the blind bolts so they became virtually invisible when painted. With these improvements, blind bolts became common in making aircraft ailerons and flaps, doors, floors, elevators, and so on. Pneumatic tools also were developed to speed up assembly. Over time, blind bolts were being made to join thin-gauge steel, plastics, fiberglass, and other materials. The automotive and electronics industries standardized Huck® blind fasteners for assembly uses. As new applications in aerospace and transportation emerged, new blind bolts were developed, capable of handling more extreme loads and temperatures. Uniquely designed structural rivets such as the Huck® BOM, Huck® Magnalok, and Huck® Magnabulb were developed for thin sheet materials. Eventually, blind bolts came to be used in place of rivets or bolts because of their ease of installation and superior performance.
Common Applications for Huck® BOM Blind Fasteners
Huck® BOM
The Highest Strength Blind Oversized Fastener Available
Blind bolts are used in almost every industry and application.
Often used as a replacement for welding, Huck® BOM is so strong, one BOM (Blind, Oversized
Mechanically locked) fastener can do the work of up to four conventional fasteners. Its unique push-
and-pull installation design makes it ideal for military vehicles, auto suspensions, rail car assembly,
and much more. BOM’s high fatigue thread form extends the life of any structure. Offering accurate,
easy, quick installation, BOM requires no special training or skills for operators.
The BOM® (Blind, Oversize Mechanically locked) fasteners from Alcoa Fastening Systems are so
strong, one can do the work of up to four ordinary fasteners.
You won’t find a more vibration resistant blind fastener, or one that works harder in so many
different applications. With its unique push-and-pull installation design, the BOM fastening system is
tough enough for military vehicles and equipment, auto suspensions, amusement park rides, rail car
assembly, and automatic storage and retrieval racks of shaft steel construction. Even the most
demanding high-tensile application is no match for the strength of the BOM fastening system.
Quick and Economical to Install and Inspect
Because installing BOM fasteners is so easy, a worker can learn the installation procedure in just 10
minutes, eliminating the need to hire certified welders or specially trained employees. And because
they install from just one side, they can be used in all blind side applications.
Installations are more accurate than other fasteners of the same kind, because the element of
human error is not an issue. In other words, correct installation doesn’t depend on operator skill or
specialized tools. Plus, chances are you can start using BOM fasteners immediately with your current
tools, saving you more money in the long run.
Excellent pull-up and high retained clamp
High fatigue thread form extends the life of your structure
Often used as a replacement for welding
Materials: Steel
Available Sizes: 3/16″,1/4″,5/16″,3/8″,1/2″,5/8″,3/4″
Benefits:
Unmatched installation speed ✓
Low overall installed cost ✓
Vibration resistance ✓
Quiet non-torque tools ✓
No repetitive stress injuries ✓
Eliminates need for secondary operations ✓
No special training or skills required for operators ✓
High strength/diameter ratio:
Can be used in demanding structural applications as an alternative to threaded fasteners or welding. Very high joint tightness when compared to conventional blind fasteners. BOM is extremely difficult to remove, making it resistant to tampering.
When the pin separates near flush, the BOM fastener is installed correctly. The BOM fastener does not require surface preparation, grinding or filling after installation.
The collar is locked to the pin through the “swaging” process, creating a high vibration resistant connection and the highest strength of any blind fastener.
Large bearing area on both sides of the work piece ensures a permanently held, tamper resistant joint.
Installation Tooling
Installation Tools
Tooling Weight and Dimensions
CONCLUSION:
Huck® BOM are used in the fabrication of military equipment, auto suspensions, truck, amusement park rides, and other applications that require a strong, lasting join and vibration resistance fastener is a priority to the application. It’s clear that Huck® plays an important part of the fastener world. They are relied upon by businesses in many industrial markets
Macros Fastening Systems brings quality parts to hard-working businesses and has offered high-quality Huck fasteners for many years. Contact us today on +91 9831045458 to get your queries resolved.
Blind fasteners are a type of metal fastener. They are also called “blind rivets” or “blind bolts”. These blind metal sheet fasteners are used to join two overlapping sheets of metal.
Huck® Magna-Bulb®
Huck Magna Bulb® blind sheet metal fastener perfect for lower strength or thin sheet joint materials. It gives high Mechanical Performance (Best in class). Very high shear strength and high tensile strength.
Seizes the joint with clamp
Consists Magna Bulb® – Blind fastener of two pieces, called mandrel and sleeve
Mandrel is heat treated, with rolled pull grooves
Mandrel contains shear ring to bulb sleeve
Sleeve material is softer than pin
Sleeve is band annealed to facilitate formation of bulb
Installs with special tool
Pin lock retains pin
Pin breaks flush with head of sleeve
Preparation
Insert mandrel and sleeve into hole
Insert mandrel into nose assembly
Jaws ratchet over mandrel until insert contacts the sleeve
Installation
When trigger is engaged:
Jaws pull mandrel
Mandrel draws through sleeve, beginning to form bulb on backside
Bulb forms, providing bearing area
Shear ring breaks free and presses on catch grooves
Mandrel shoulder hits sleeve lock and forces material into pin lock pocket
Tool ejection
Jaws continue pulling
Mandrel breaks at breakneck
When trigger is released, nose assembly frees from sleeve
Use in applications that require:
High shear strength
High tensile strength
Consistent clamp (compared to other blind fasteners)
Loosening resistance in vibration situations
Broad blind side bearing surface
High pullout strength, esp. with mis-aligned, oversized or out of round holes
Pull through resistance on thin materials
Back side clearance
Flush pin break
Refer to current industries
General manufacturing
High vibration applications
Commercial truck body assembly
Seat track
Engine enclosures
Special features against blind fasteners for metal
Extra large blind side footprint: Ideal for lower strength or thin sheet joint materials
Structural fastener: It provides high tensile strength and very high shear strength
Flush pinbreak: The blind side of fasteners are free from catching on clothes, skin or goods. No special tool required for checking the installation but it gives Quick and easy visual inspection
Internal pin locking mechanism: Secure within the rivet body and protected from corrosion
Headstyles: Protruding
Materials: Steel
A Unique Bulbing Fastener with High Shear Strength
Huck Magna-Bulb® is a unique, clamp-type blind fastener offering high shear strength in specific applications. Its bulbing action during installation spreads the load over more surface area. Post installation, this blind fastener supplies stronger, longer-lasting connection. Thus Magna Bulb® blind fastener offers superior blind side strength.
This increased bearing area makes Magna-Bulb-blind fastener ideal for pullout resistance in thin materials, and oversized or misaligned holes. Positive, mechanical pin-retention ensures structural integrity no matter what the application.
Secure, Fast Installation
Shear ring design promotes bulb formation and grip adjustment for flush break throughout the grip range
The wide blind footprint (bulb) gives the fastener a broader bearing surface, spreading the load out for greater strength and high pull out resistance
Unique solid circle lock ensures maximum strength and resistance to vibration
Breaking flush throughout the entire grip range, the Magna-Bulb fastener eliminates costly cosmetic finish work. Simple visual inspection ensures that the fastener is installed correctly.
Installation Sequence
Application picture (where there is no access in blind side)
Tools for Magna Bulb® – Blind fasteners installation:
Designed to overcome inherent weaknesses with standard lockbolts, the BobTail has no pin-tail and as a result of this zero pin-break, no waste material to collect and dispose of or potential corrosion issues post-installation. The lightweight, low-noise, low-maintenance Huck tool, which can be used for both installing and removing fasteners, provides a smooth, shock-free, speedy installation sequence i.e. two seconds for a 16mm diameter fastener – twice as fast as any other large diameter lockbolt. As a result, no torque or impact is transferred to the operator.
Benefits of Using Bobtail®
Unmatched installation speed
High fatigue strength thread form
maintenance-free
consistent clamp
installation indicator on collar for visual inspection
low installation noise & no waste
easy to learn, shock-free installation
unique helical lock groove
Huck Bobtail® Next Step In Lockbolt Evolution
The Huck BobTail system includes Lock Bolts and installation tooling that will deliver you benefits beyond anything that Howmet Fastening Systems has produced before.
Cycle Installation Speed of fastener has to be seen to be believed with the 1/4 diameter BobTail fastener installing in less than 1 second. The 16mm diameter BobTail fastener installs in 2 seconds, up to twice as fast as any large diameter LockBolt on the market.
Combined with all the benefits of using a Huck LockBolt Permanent, mechanically locked fastener: Installation process automatically provides fastener values No torque or re-torque required Unlike conventional nuts and bolts, they will never loosen, even during extreme vibration Easy visual inspection ensures correct installation
How Bobtail Works
Clamp Force or Pre–Load:
In the initial stages of the installation process, the tool engages and pulls on the tail of the fastener. The joint is pulled together before the anvil portion of the nose assembly is forced down the collar. This progressively locks (swages) it into the grooves of the harder pin. The pin and swaged collar combine to form the installed fastener. The squeezing action reduces the diameter of the collar, increasing its length. This in turn stretches the pin, generating a clamping force over the joint. The shear strength of BobTail fasteners varies according to the material strength and minimum diameter of the fastener. By increasing the diameter or the grade of material, the shear strength of the fastener can be increased. The tensile strength of BobTail Huck bolt fasteners is dependent on the shear resistance of the collar material and the number of grooves it fills.
Installation sequence
Pin placed into the prepared hole
Collar placed over the pin
The tool is placed onto the annular pull grooves and activated
A puller in the nose assembly draws the pin into the tool
Pin head pulled against material
Anvil pushes collar against joint
Initial clamp generated
Tool swages collar, increasing clamp
Swaging of the collar into the pin lock grooves is complete, tool ejects the fastener and releases the puller, installation complete
Huck®, Camloc®, Marson®, Recoil® is a brand owned by Howmet Fastening Systems (erstwhile Arconic Fastening Systems) , a leading designer and manufacturer of high-performance, proprietary fasteners and fastener installation systems.
Macros Fastening Systems is proud to be the only authorized distributor of Huck® Fasteners – Huckbolts®, Blind rivets, Huck® tooling, Recoil® inserts & installation tooling, Camloc® latches and SNEP nuts in India
A Lock Bolt is a two-piece fastener that consists of a hardened metal pin and a metal collar that swages into the grooves of the pin, forming a specific, measured clamp force to hold assembled parts.
The Huck® installation toolgrips the pintail of a Lock Bolt and then pulls to close the gaps in the materials being joined. Inside the nose assembly, a hardened steel conical-shaped anvil is then forced down the collar to progressively squeeze, or swage, the collar material into the grooves.
This direct metal-to-metal contact of the collar swaged into the grooves of the pin eliminates the loosening effects of transverse vibration.
Often installs in Under 2 Seconds
Consistent, High Clamp Force
Certified Maintenance-Free Joints
High Shear, Tensile, Pin Strength
Some of our best Huck® Lockbolts to provide strength to your machinery.
C6L ® The Original Vibration-Resistant Huck Bolt®
A result of Huck International innovation a half-century ago, the versatile C6L® Huck Bolt® remains the number one fastening system for applications that require a strong, vibration-resistant seal today.
C6L’s exclusive locking groove design ensures a permanent fit that resists loosening. That means it’s ideal for applications from general manufacturing to such high-vibration applications as HVAC, trailer and container assembly, rotary and rotating equipment, shopping carts, railroad, and transit cars, geodesic structures, and many others.
In addition to offering superior fastening performance, the C6L system reduces labor and installation costs, along with rework and warranty expenses. Using the C6L eliminates the need to hire certified welders or specially trained employees because workers can be instructed to install these foolproof fasteners in a matter of minutes. The C6L is simply stronger, easier to install, and more durable than welding, adhesives, or conventional threaded fastening systems. The C6L is available in Grade 2, Grade 5, and Grade 8.
Available Sizes: 3/16”, 1/4”, 5/16”, 3/8”
Materials: Steel, Aluminum, Stainless Steel
Head styles: Round, Truss, Flush, 98T
The C6L’s unique design virtually eliminates installation errors caused by operator or tool variables. The C6L ensures that once the collar swage is complete, the pintail breaks off and the fastener is tightly installed. No rework is required. You can count on consistent, highly-uniform clamp force with every C6L installation, time after time.
1 Wide bearing collar and head spread the load to ensure structural integrity.
2 Initial long length of fastener enables pull-out of large gaps.
3 Excellent gap pull-out and high retained clamp.
4 High-fatigue, annular lock groove form extends the life of your structure.
Huck® C50L® The Fastener That Has Defined Huck Bolts for More Than 50 years
The C50L® offers superior vibration resistance and overall durability for heavy-duty fastening jobs and is ideal for use within applications where consistent, uniform high clamp force is required. Testing has proven that C50L fasteners meet, or exceed the performance of torqued bolts in both shear and tensile strength, as well as fatigue life. For heavy-duty applications ranging from railcar to mining equipment manufacturing, the C50L delivers superior vibration resistance and overall durability.
Available Sizes: 1/2”, 5/8”, 3/4”, 7/8”, 1”, 1-1/8”, 1-3/8”
Materials: Steel, Aluminum
Head styles: Round, Truss, Large Truss, 90° Flush, Thread Head
Unlike threaded fasteners, the C50L HuckBolt® delivers consistent installation results. High costs of calibrating, maintaining, and replacing tools are eliminated. Also, installation does not require expensive, highly experienced workers.
1 Swaged-on collar forms a permanent, vibration-proof connection.
2 Initial long length of fastener enables pull-out of large gaps.
3 Consistent, repeatable pre-load
How Do Huck® Bolts Work?
Clamp Force or Pre-Load
In the initial stages of the installation process, the Huck® lock bolt tool engages and pulls on the pintail. The joint is pulled together before the conical-shaped cavity of the nose assembly is forced down the collar. This progressively locks (swages) it into the grooves of the harder pin. The pin and swaged collar combine to form the installed fastener. The squeezing action reduces the diameter of the collar, increasing its length. This in turn stretches the pin, generating a clamp force over the joint.
Shear strength
Varies according to the material strength and minimal diameter of the fastener. By increasing the diameter or the grade of material, the shear strength of the fastener can be increased.
Tensile strength
The tensile strength of Lock Bolts is dependent on the shear resistance of the collar material and the number of grooves it fills.
Installing Huck® Bolts Using Huck Bolt Installation Tools.
Before installation, you need to make sure that you have the right size of Huck® bolts for the process. You would want to go for one that has the right size and strength for your needs.
Put the Huck® bolt in the hole prepared for it. Try to make sure that the bolt is the right fit for the application, or there are chances of lateral movement. This movement can weaken the joint over time.
When you place the Huck® bolt in the cavity, the collar will be over the pinhead. When you use a Huck® lockbolt installation tool for the process, the reliable collar will form a durable connection that lasts for years.
We have many different kinds of hydraulic machines that can help with your installation process. We have hydraulic and pneudraulic powered Huck® bolting machinesthat effectively help you install Huck® bolts in seconds. A few of our best products are the Swage forward Range and Huck® Range Force Battery Installation Tool.
From the wide range of tools available, try to choose the perfect match for your needs. Put the machine’s nosepiece into the collar, over the pintail. Activate the Huck® bolt tooling.
The activation process will put pressure on the collar and brings the pieces of the bolt together. It ensures a sturdy design that cannot become loose over time.
Once the process is complete, the tool breaks from the pintail, and you can remove the machine.
