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C6L Lockbolt Fastener

C6L Lockbolt Fastener

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Jay Cee Sales & Rivet has a large in-stock supply of Vibration-resistant C6L huck fasteners install with consistency and control. They resist loosening due to vibration and provide a high uniform clamp force. This is an excellent fastener for a wide range of structural applications.

PIN DIMENSIONS

Maximum Brazier Head (B) Truss Head (T) Flush Head (90)
Dia. (No.) Hole Size A B C B C B C
3/16 (6) .203 .195-.191 .394-.356 .125-.113 .469-.406 .088-.078 .354-.328 .085-.075
1/4 (8) .266 .259-.254 .525-.475 .152-.136 .594-.531 .115-.103 .473-.437 .113-.101
5/16 (10) .328 .322-.317 .656-.594 .201-.181 .797-.703 .141-.127 .589-.547 .141-.127
3/8 (12) .391 .385-.380 .787-.713 .248-.223 .922-.828 .168-.152 .709-.656 .168-.152
Material and Finish
Material Finish
Pin Carbon Steel (R) Carbon Steel-none (plain black)
2024 Aluminum Alloy (C) 2024 Aluminum Alloy-Anodize per MIL-A-8625 or chemical surface
6061 Aluminum Alloy (F) treatment per MIL-C-5541 (Manufacturer's option)
CRES Steel (U) 6061 Aluminum Alloy-None
CRES Steel-None

COLLAR DIMENSIONS

Collar Part Collar F G H J K
Type Number Diameter Diameter Diameter Length Dimension Diameter
Standard 2LC-R, 2LC-F, 3/16 .187-.196 .311-.304 .220-.260
LC-I, 2LC-2CU 1/4 .256-.265 .409-.402 .320-.290
5/16 .304-.312 .494-.485 .380-.350
3/8 .375-.385 .600-.590 .460-.430
Flange 3LC-2R, 3LC-F, 3/16 .187-.196 .311-.304 .280-.250 .062-.031 .391-.359
3LC-I, 3LC-2CU 1/4 .256-.267 .409-.402 .379-.349 .078-.047 .516-.484
5/16 .304-.312 .507-.498 .426-.394 .094-.062 .641-.609
3/8 .378-.390 .610-.599 .532-.502 .125-.062 .781-.719
Low Profile 8LC-2R, 8LC-F, 3/16 .187-.196 .311-.304 .162-.132 .094
8LC-I, 8LC-2CU 1/4 .256-.265 .409-.402 .202-.172 .125
5/16 .304-.312 .494-.485 .255-.225 .125
3/8 .375-.385 .600-.590 .295-.310 .156
Note: When using 3LC collars, add "J" dimension to thickness of material being fastened to determine grip number.
Note: When using 8LC collars, subtract "J" dimension from thickness of material being fastened to determine grip number.
Note: Use collars and pins together as shown in "Values" tables, or contact HUCK.
Material and Finish
Material Finish
Collar Low Carbon Steel (R) or (2R) Carbon Steel-Zinc plated, Wax Film Lubricated
6061 Aluminum Alloy-Heat treated (F) Aluminum Alloy-None, Wax Film Lubricated
6061 Aluminum Alloy (I) CRES Steel-None, Wax Film Lubricated
CRES Steel (CU) Wax Film Lubricated

TENSILE STRENGTH DATA

C6L® Installed Values 1 in Nominal Grip (lbs.)

Pin: 6061Aluminum (F) 2024Aluminum (C) Carbon Steel CRES (U)
Collar: LC-I or 3LC-I 2LC-F or 3LC-F 2LC-R or 3LC-R 2LC-2CU or 3LC-2CU
3/16 Shear 775 1050 1725 2000
Tensile 530 1000 1650 1455
Clamp 350 550 1025 1025
1/4 Shear 1375 1875 3050 3550
Tensile 975 1800 3000 3750
Clamp 620 950 1805 1805
5/16 Shear 2125 2925 4725 5525
Tensile 1550 2850 4600 4250
Clamp 965 1500 2810 2810
3/8 Shear 3050 4200 6825 7950
Tensile 2400 4200 6500 6100
Clamp 1380 2200 4020 4020
1 Minimum installed values (pounds) in nominal grip