L-9 Hex Head Cap Screws

When a Grade 8 bolt is not enough, L-9 hex head cap screws bring serious clamp load for high-stress, severe-service joints. Built from AISI 8640H alloy steel with 180,000-200,000 psi tensile strength for heavy equipment, presses, structural repairs. Choose SAE or USS threads to match your tapped holes. Meets ASTM F606, RoHS.

212 results

L9 (USS) Hex Head Cap Screws

L9 (SAE) Hex Head Cap Screws

L9 (USS) Hex Head Cap Screws

The L9 fastening system offers exceptional performance in high stress, severe service environments. Featuring the highest mechanical strength, it is the strongest off-the-shelf fastening system available. With tensile strength ranging from 180,000 to 200,000 P.S.I., it surpasses SAE Grade 8 fasteners while maintaining necessary ductility. HIGH GRADE AISI 8640H alloy steel ensures superior strength and consistency, meeting ASTM F606 standards and RoHS compliance. MADE IN THE U.S.A.

Diameter: 1/4"

Length	Thread Size	Thread Type	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1/2"	1/4"-20	Coarse	100	980404	Log in to view price
1/4"-20 x 1/2" L9 (USS) Hex Head Cap Screw - 100 Pack Item #: 980404 Package Weight: 1.3 lbs View Product Details Log in to Order
3/4"	1/4"-20	Coarse	100	980406	Log in to view price
1/4"-20 x 3/4" L9 (USS) Hex Head Cap Screw - 100 Pack Item #: 980406 Package Weight: 1.6 lbs View Product Details Log in to Order
1"	1/4"-20	Coarse	100	980408	Log in to view price
1/4"-20 x 1" L9 (USS) Hex Head Cap Screw - 100 Pack Item #: 980408 Package Weight: 1.8 lbs View Product Details Log in to Order
1-1/4"	1/4"-20	Coarse	100	980410	Log in to view price
1/4"-20 x 1-1/4" L9 (USS) Hex Head Cap Screw - 100 Pack Item #: 980410 Package Weight: 2.2 lbs View Product Details Log in to Order
1-1/2"	1/4"-20	Coarse	100	980412	Log in to view price
1/4"-20 x 1-1/2" L9 (USS) Hex Head Cap Screw - 100 Pack Item #: 980412 Package Weight: 2.5 lbs View Product Details Log in to Order
1-3/4"	1/4"-20	Coarse	100	980414	Log in to view price
1/4"-20 x 1-3/4" L9 (USS) Hex Head Cap Screw - 100 Pack Item #: 980414 Package Weight: 2.9 lbs View Product Details Log in to Order
2"	1/4"-20	Coarse	100	980416	Log in to view price
1/4"-20 x 2" L9 (USS) Hex Head Cap Screw - 100 Pack Item #: 980416 Package Weight: 3.2 lbs View Product Details Log in to Order
2-1/2"	1/4"-20	Coarse	50	980420	Log in to view price
1/4"-20 x 2-1/2" L9 (USS) Hex Head Cap Screw - 50 Pack Item #: 980420 Package Weight: 1.9 lbs View Product Details Log in to Order
3"	1/4"-20	Coarse	50	980424	Log in to view price
1/4"-20 x 3" L9 (USS) Hex Head Cap Screw - 50 Pack Item #: 980424 Package Weight: 2.3 lbs View Product Details Log in to Order
4"	1/4"-20	Coarse	25	980432	Log in to view price
1/4"-20 x 4" L9 (USS) Hex Head Cap Screw - 25 Pack Item #: 980432 Package Weight: 1.5 lbs View Product Details Log in to Order

Diameter: 5/16"

Length	Thread Size	Thread Type	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1/2"	5/16"-18	Coarse	100	980504	Log in to view price
5/16"-18 x 1/2" L9 (USS) Hex Head Cap Screw - 100 Pack Item #: 980504 Package Weight: 2.1 lbs View Product Details Log in to Order
3/4"	5/16"-18	Coarse	100	980506	Log in to view price
5/16"-18 x 3/4" L9 (USS) Hex Head Cap Screw - 100 Pack Item #: 980506 Package Weight: 2.5 lbs View Product Details Log in to Order

View All

L9 (SAE) Hex Head Cap Screws

Diameter: 1/4"

Length	Thread Size	Thread Type	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1/2"	1/4"-28	Fine	100	990404	Log in to view price
1/4"-28 x 1/2" L9 (SAE) Hex Head Cap Screw - 100 Pack Item #: 990404 Package Weight: 1.4 lbs View Product Details Log in to Order
3/4"	1/4"-28	Fine	100	990406	Log in to view price
1/4"-28 x 3/4" L9 (SAE) Hex Head Cap Screw - 100 Pack Item #: 990406 Package Weight: 1.6 lbs View Product Details Log in to Order
1"	1/4"-28	Fine	100	990408	Log in to view price
1/4"-28 x 1" L9 (SAE) Hex Head Cap Screw - 100 Pack Item #: 990408 Package Weight: 1.9 lbs View Product Details Log in to Order
1-1/4"	1/4"-28	Fine	100	990410	Log in to view price
1/4"-28 x 1-1/4" L9 (SAE) Hex Head Cap Screw - 100 Pack Item #: 990410 Package Weight: 2.3 lbs View Product Details Log in to Order
1-1/2"	1/4"-28	Fine	100	990412	Log in to view price
1/4"-28 x 1-1/2" L9 (SAE) Hex Head Cap Screw - 100 Pack Item #: 990412 Package Weight: 2.7 lbs View Product Details Log in to Order
1-3/4"	1/4"-28	Fine	100	990414	Log in to view price
1/4"-28 x 1-3/4" L9 (SAE) Hex Head Cap Screw - 100 Pack Item #: 990414 Package Weight: 3 lbs View Product Details Log in to Order
2"	1/4"-28	Fine	100	990416	Log in to view price
1/4"-28 x 2" L9 (SAE) Hex Head Cap Screw - 100 Pack Item #: 990416 Package Weight: 3.3 lbs View Product Details Log in to Order
2-1/2"	1/4"-28	Fine	50	990420	Log in to view price
1/4"-28 x 2-1/2" L9 (SAE) Hex Head Cap Screw - 50 Pack Item #: 990420 Package Weight: 2 lbs View Product Details Log in to Order
3"	1/4"-28	Fine	50	990424	Log in to view price
1/4-28 x 3" L9 (SAE) Hex Head Cap Screw - 50 Pack Item #: 990424 Package Weight: 2.4 lbs View Product Details Log in to Order

Diameter: 5/16"

Length	Thread Size	Thread Type	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1/2"	5/16"-24	Fine	100	990504	Log in to view price
5/16"-24 x 1/2" L9 (SAE) Hex Head Cap Screw - 100 Pack Item #: 990504 Package Weight: 2.3 lbs View Product Details Log in to Order
3/4"	5/16"-24	Fine	100	990506	Log in to view price
5/16"-24 x 3/4" L9 (SAE) Hex Head Cap Screw - 100 Pack Item #: 990506 Package Weight: 2.7 lbs View Product Details Log in to Order
1"	5/16"-24	Fine	100	990508	Log in to view price
5/16"-24 x 1" L9 (SAE) Hex Head Cap Screw - 100 Pack Item #: 990508 Package Weight: 3.1 lbs View Product Details Log in to Order