PECM Issue 53 2021 | Page 20

An alternative to welding

EDITOR ’ S CHOICE ENGINEERED HUCK ® FASTENERS

STAR FASTENERS
An alternative to welding
For more than 60 years , the Huck ® range of LockBolts and blind fasteners have been solving the problem of extreme stress and vibration in joints , providing strength and facilitating lighter , stronger , more durable structures ... without loosening .
Huck HUCK LOCKBOLTS LockBolts
BobTail ®
C50L ®
Today the Huck product range , based on the original HuckBolt ® design , has evolved to include small & large diameter LockBolts ® medium & heavy-duty blind fasteners and the associated installation tooling , each specially engineered to offer superior performance ”.
Diameters ( mm )
6.4 7.9 9.5 12
12.7 14 15.9 16
19.1 20 22.2 24
25.4 27 30 36
C6L ® - The Original Huck Design
Unique helical lock groove ( upwards from 9.5mm ): Holds pins and collar in place prior to installation * No pin-tail : Reduced wastage , low installation noise No pin-break : High corrosion resistance Semi-automatic tooling installation : Minimises installation time Pin head style : Brazier , truss , countersunk Collar style : Flanged Materials : Steel ( 5.8 / 8.8 up to 9.5mm , 8.8 / 10.9 12mm and above ) Coating : High corrosion resistant coatings available
Diameters ( mm )
12.7
15.9
19.1
22.2
25.4
28.6
31.8
34.9
C120L ®
8.8 grade large diameter Lockbolt Made to British Standard B7805 : Part 2 : 1997 : A mark of quality , safety and performance High tensile friction grip fastener Pin head style : Round , truss , countersunk , thread head Collar style : Standard , flanged , low profile Materials : Steel , stainless steel , aluminium Thread head variety available for rail track applications
WHAT IS A HUCKBOLT AND HOW DO THEY WORK ?
Structural HuckBolts , also known as Lockbolts are available in a wide range of sizes ( up to 1 3 / 8 inch ) and materials , consist of a pin and a collar . These advanced fasteners are installed using a direct tension technique , in which the pin is pulled and the collar is simultaneously swaged into the locking grooves of the pin , deforming the collar into the grooves . Based on their design and unique direct tension installation , HuckBolts deliver consistent clamp for a strong , stable , and vibration-resistant joint . Huck Lockbolts provide direct metal-to-metal contact when installed , which eliminates the transverse vibration often found in conventional nuts and bolts . Engineered for a wide range of applications , Huck Lockbolts deliver superior joining strength , shear , and tensile strength for an unmatched fastening solution .
HUCKBOLT FASTENING TECHNOLOGY – ELIMINATING THE EFFECTS OF VIBRATION
In addition to providing for faster , safer , and more accurate joining , there are several unique design elements of HuckBolts that ensure their ultimate resistance to the effects of vibration . Conventional nut and bolt installations , can loosen in high-vibration environments and need continual checking and maintenance , by comparison Huck LockBolts provide a consistent jointing solution .
HUCK BLIND STRUCTURAL FASTENERS
For applications where only one side of the joint material is accessible , performance engineered Huck structural blind fasteners can often meet design requirements . These
Diameters ( mm )
4.8 6.4 7.9 9.5
Magna-Grip ®
Diameters ( mm )
4.8 6.4 7.9 9.5
Hucktainer ® - Designed specifically for joining composite board in trailer applications .
Diameter ( mm )
9.5
5.8 grade small diameter Lockbolt Made to British Standard B7805 : Part 1 : 1997 : A mark of quality , safety and performance Wide flange collar available : Enables installation into nonmetallic materials Pin head style : Brazier , truss , countersunk , specific headstyle for palisade fencing Collar style : Standard , flanged , wide flanged and low profile Materials : Steel , stainless steel , aluminium
Huge grip range : Accommodates wide variations in joint thickness - 14.3 / 23.9mm ** One pin and one collar cover a wide variety of applications : Reducing the risk of incorrect fastener installation Wide grip range minimises fastener inventory Flush pinbreak : No catching on clothes , skin or goods Pin head style : Button , truss , countersunk , rivet , broad truss Collar style : Standard flange , medium flange , wide flange Materials : Steel , aluminium
* Special tab collar is needed to perform this function . ** Based on 6.4mm diameter . Two different grip lengths available . *** As long as the nut and bolt set remain free spinning after removal . Individual fastener benefits will vary depending on the application they are used in .
Will not crush or damage the composite board
Integral seal around pin head prevents moisture ingress
Low profile on both sides when installed : No catching on clothes , skin or goods . Not as grip sensitive as some competitor products
blind fasteners can deliver the shear and tensile strength to meet the demands of a number of demanding applications . Available in diameters ranging from 3 / 16 inch to ¾ inch , these fasteners offer a combination of strength and vibration resistance , easy installation , and a high level of safe operation .
WHERE ARE HUCK FASTENERS USED ?
Huck Fasteners are used in many industrial markets including truck , trailer , automotive , heating , ventilation and air conditioning , bus , coach , portable buildings , agricultural machinery , green energy and rail , but the
Diameters ( mm )
4.8 6.4 7.9 9.5
8.8 grade small diameter Lockbolt High tensile strength version of C6L Pin head style : Brazier , truss , countersunk Collar style : Standard , flanged Materials : Steel
Huck 360 ® - Unique Lockbolt Solution
Diameters ( mm )
M10 M12 M16 M18
M20 M27 M36
Imperial sizes available on request
Pin head style : Standard low profile , encapsulated in plastic
Sleeve style : Wide bearing , medium bearing , clearance
Short grip version available Materials : Steel
No special tooling system required : Can be installed using a standard torque wrench Ideal for use where installation accessibility is limited for a standard Lockbolt Can be removed and re-tightened *** High speed installation : No prevailing torque All the performance benefits of a 10.9 grade Lockbolt
application possibilities are endless .
HUCK ® LOCKBOLTS , AN ALTERNATIVE TO WELDING ?
HuckBolts and Huck structural blind fasteners have not been designed to replace all welds , but there are many applications where welding has been traditionally employed where Huck fasteners are a viable alternative . Engineered for easy installation , and long , reliable life , these direct tension HuckBolts and structural blind fasteners can be a faster , more cost efficient , and safer alternative to traditional welding processes .
20 PECM Issue 53