Grade 8 Hex Head Cap Screws

676 results

KM-USA High Head Grade 8 Cap Screws - USS

KM-USA Grade 8 (USS) High Head Hex Head Cap Screws Assortments

KM-USA High Head Grade 8 Cap Screws - SAE

KM-USA Grade 8 (SAE) Hex Head Cap Screws Assortments

KM-USA High Head Grade 8 Cap Screws - USS

With a taller head for improved wrench grip, these KM‑USA High Head Grade 8 screws offer enhanced alignment in tough MRO applications. Special alloy steel delivers 150,000 PSI tensile strength, while zinc yellow plating resists corrosion. Perfect for machinery needing extra torque, they’re made in the USA for assured quality. Combine with Grade 8 washers and nuts for maximum reliability.

Diameter: 1/4"

Length	Thread Size	Thread Type	Series	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	KM-USA High Head	25	380404J	Log in to view price
1/4"-20 x 1/2" KM-USA High Head Grade 8 (USS) Cap Screw - 25 Pack Item #: 380404J Package Weight: 0.3 lbs View Product Details Log in to Order
1/2"	1/4"-20	Coarse	KM-USA High Head	100	380404	Log in to view price
1/4"-20 x 1/2" KM-USA High Head Grade 8 (USS) Cap Screw - 100 Pack Item #: 380404 Package Weight: 1.3 lbs View Product Details Log in to Order
3/4"	1/4"-20	Coarse	KM-USA High Head	25	380406J	Log in to view price
1/4"-20 x 3/4" KM-USA High Head Grade 8 (USS) Cap Screw - 25 Pack Item #: 380406J Package Weight: 0.4 lbs View Product Details Log in to Order
3/4"	1/4"-20	Coarse	KM-USA High Head	100	380406	Log in to view price
1/4"-20 x 3/4" KM-USA High Head Grade 8 (USS) Cap Screw - 100 Pack Item #: 380406 Package Weight: 1.6 lbs View Product Details Log in to Order
1"	1/4"-20	Coarse	KM-USA High Head	25	380408J	Log in to view price
1/4"-20 x 1" KM-USA High Head Grade 8 (USS) Cap Screw - 25 Pack Item #: 380408J Package Weight: 0.5 lbs View Product Details Log in to Order
1"	1/4"-20	Coarse	KM-USA High Head	100	380408	Log in to view price
1/4"-20 x 1" KM-USA High Head Grade 8 (USS) Cap Screw - 100 Pack Item #: 380408 Package Weight: 1.9 lbs View Product Details Log in to Order
1-1/4"	1/4"-20	Coarse	KM-USA High Head	25	380410J	Log in to view price
1/4"-20 x 1-1/4" KM-USA High Head Grade 8 (USS) Cap Screw - 25 Pack Item #: 380410J Package Weight: 0.6 lbs View Product Details Log in to Order
1-1/4"	1/4"-20	Coarse	KM-USA High Head	100	380410	Log in to view price
1/4"-20 x 1-1/4" KM-USA High Head Grade 8 (USS) Cap Screw - 100 Pack Item #: 380410 Package Weight: 2.2 lbs View Product Details Log in to Order
1-1/2"	1/4"-20	Coarse	KM-USA High Head	25	380412J	Log in to view price
1/4"-20 x 1-1/2" KM-USA High Head Grade 8 (USS) Cap Screw - 25 Pack Item #: 380412J Package Weight: 0.7 lbs View Product Details Log in to Order
1-1/2"	1/4"-20	Coarse	KM-USA High Head	100	380412	Log in to view price
1/4"-20 x 1-1/2" KM-USA High Head Grade 8 (USS) Cap Screw - 100 Pack Item #: 380412 Package Weight: 2.6 lbs View Product Details Log in to Order
1-3/4"	1/4"-20	Coarse	KM-USA High Head	25	380414J	Log in to view price
1/4"-20 x 1-3/4" KM-USA High Head Grade 8 (USS) Cap Screw - 25 Pack Item #: 380414J Package Weight: 0.7 lbs View Product Details Log in to Order
1-3/4"	1/4"-20	Coarse	KM-USA High Head	100	380414	Log in to view price
1/4"-20 x 1-3/4" KM-USA High Head Grade 8 (USS) Cap Screw - 100 Pack Item #: 380414 Package Weight: 2.9 lbs View Product Details Log in to Order

View All

KM-USA Grade 8 (USS) High Head Hex Head Cap Screws Assortments

Storage Type: 24-Compartment Drawer

Name	Material	Finish	Measurement Type	Number of Pieces	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 3/8")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	USS	750	1	40388	Log in to view price
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 3/8") Item #: 40388 Package Weight: 24.6 lbs View Product Details Log in to Order

Storage Type: 40-Hole Bin

Name	Material	Finish	Measurement Type	Number of Pieces	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 1/2")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	USS	1,735	1	40380	Log in to view price
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 1/2") Item #: 40380 Package Weight: 102.4 lbs View Product Details Log in to Order
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 3/8")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	USS	1,200	1	403801	Log in to view price
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 3/8") Item #: 403801 Package Weight: 58.7 lbs View Product Details Log in to Order
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (3/4" - 1")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	USS	230	1	403811	Log in to view price
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (3/4" - 1") Item #: 403811 Package Weight: 117.3 lbs View Product Details Log in to Order

Storage Type: 80-Hole Bin

Name	Material	Finish	Measurement Type	Number of Pieces	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
KM-USA High Head Grade 8 Hex Head (USS & SAE) Cap Screw Assortment (1/4" - 5/8")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	SAE, USS	3,000	1	40383	Log in to view price
KM-USA High Head Grade 8 Hex Head (USS & SAE) Cap Screw Assortment (1/4" - 5/8") Item #: 40383 Package Weight: 185.5 lbs View Product Details Log in to Order
KM-USA High Head Hex Head Grade 8 (USS) Cap Screw Assortment (1/4" - 3/4")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	USS	3,775	1	40385	Log in to view price
KM-USA High Head Hex Head Grade 8 (USS) Cap Screw Assortment (1/4" - 3/4") Item #: 40385 Package Weight: 299.8 lbs View Product Details Log in to Order
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 3/4")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	USS	1,910	1	40386	Log in to view price
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 3/4") Item #: 40386 Package Weight: 190.3 lbs View Product Details Log in to Order
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 5/8")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	USS	2,720	1	40381	Log in to view price
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 5/8") Item #: 40381 Package Weight: 180.8 lbs View Product Details Log in to Order

Storage Type: Refill Kit

Name	Material	Finish	Measurement Type	Number of Pieces	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
Refill Kit for KM-USA High Head Grade 8 Hex Head (USS & SAE) Cap Screw Assortment (1/4" - 5/8")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	SAE, USS	3,000	1	40383RE	Log in to view price
Refill Kit for KM-USA High Head Grade 8 Hex Head (USS & SAE) Cap Screw Assortment (1/4" - 5/8") Item #: 40383RE Package Weight: 107.3 lbs View Product Details Log in to Order
Refill Kit for KM-USA High Head Grade 8 Hex Head (USS) Cap Screw Large Assortment (1/4" - 3/4")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	USS	3,775	1	40385RE	Log in to view price
Refill Kit for KM-USA High Head Grade 8 Hex Head (USS) Cap Screw Large Assortment (1/4" - 3/4") Item #: 40385RE Package Weight: 221.6 lbs View Product Details Log in to Order
Refill Kit for KM-USA High Head Grade 8 Hex Head Cap Screw Large Assortment (1/4" - 5/8")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	USS	2,720	1	40381RE	Log in to view price
Refill Kit for KM-USA High Head Grade 8 Hex Head Cap Screw Large Assortment (1/4" - 5/8") Item #: 40381RE Package Weight: 102.6 lbs View Product Details Log in to Order
Refill Kit for KM-USA High Head Grade 8 Hex Head Cap Screw Small Assortment (1/4" - 1/2")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	USS	1,735	1	40380RE	Log in to view price
Refill Kit for KM-USA High Head Grade 8 Hex Head Cap Screw Small Assortment (1/4" - 1/2") Item #: 40380RE Package Weight: 63.3 lbs View Product Details Log in to Order

View All

KM-USA High Head Grade 8 Cap Screws - SAE

Boasting a 20% taller head for improved tool contact, these KM‑USA High Head Grade 8 Cap Screws (SAE) resist fatigue with a 150,000 PSI rating. The chrome alloy steel design supports easy alignment, while a zinc yellow finish guards against corrosion. Ideal for engine blocks, pumps, or structural assemblies, they’re 100% made in the USA. Use matching washers and nuts for reliable, long‑lasting performance.

Diameter: 1/4"

Length	Thread Size	Thread Type	Series	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	KM-USA High Head	25	390404J	Log in to view price
1/4"-28 x 1/2" KM-USA High Head Grade 8 (SAE) Cap Screw - 25 Pack Item #: 390404J Package Weight: 0.3 lbs View Product Details Log in to Order
1/2"	1/4"-28	Fine	KM-USA High Head	100	390404	Log in to view price
1/4"-28 x 1/2" KM-USA High Head Grade 8 (SAE) Cap Screw - 100 Pack Item #: 390404 Package Weight: 1.4 lbs View Product Details Log in to Order
3/4"	1/4"-28	Fine	KM-USA High Head	25	390406J	Log in to view price
1/4"-28 x 3/4" KM-USA High Head Grade 8 (SAE) Cap Screw - 25 Pack Item #: 390406J Package Weight: 0.4 lbs View Product Details Log in to Order
3/4"	1/4"-28	Fine	KM-USA High Head	100	390406	Log in to view price
1/4"-28 x 3/4" KM-USA High Head Grade 8 (SAE) Cap Screw - 100 Pack Item #: 390406 Package Weight: 1.6 lbs View Product Details Log in to Order
1"	1/4"-28	Fine	KM-USA High Head	25	390408J	Log in to view price
1/4"-28 x 1" KM-USA High Head Grade 8 (SAE) Cap Screw - 25 Pack Item #: 390408J Package Weight: 0.5 lbs View Product Details Log in to Order
1"	1/4"-28	Fine	KM-USA High Head	100	390408	Log in to view price
1/4"-28 x 1" KM-USA High Head Grade 8 (SAE) Cap Screw - 100 Pack Item #: 390408 Package Weight: 2 lbs View Product Details Log in to Order
1-1/4"	1/4"-28	Fine	KM-USA High Head	25	390410J	Log in to view price
1/4"-28 x 1-1/4" KM-USA High Head Grade 8 (SAE) Cap Screw - 25 Pack Item #: 390410J Package Weight: 0.6 lbs View Product Details Log in to Order
1-1/4"	1/4"-28	Fine	KM-USA High Head	100	390410	Log in to view price
1/4"-28 x 1-1/4" KM-USA High Head Grade 8 (SAE) Cap Screw - 100 Pack Item #: 390410 Package Weight: 2.3 lbs View Product Details Log in to Order
1-1/2"	1/4"-28	Fine	KM-USA High Head	25	390412J	Log in to view price
1/4"-28 x 1-1/2" KM-USA High Head Grade 8 (SAE) Cap Screw - 25 Pack Item #: 390412J Package Weight: 0.7 lbs View Product Details Log in to Order
1-1/2"	1/4"-28	Fine	KM-USA High Head	100	390412	Log in to view price
1/4"-28 x 1-1/2" KM-USA High Head Grade 8 (SAE) Cap Screw - 100 Pack Item #: 390412 Package Weight: 2.6 lbs View Product Details Log in to Order
1-3/4"	1/4"-28	Fine	KM-USA High Head	25	390414J	Log in to view price
1/4"-28 x 1-3/4" KM-USA High Head Grade 8 (SAE) Cap Screw - 25 Pack Item #: 390414J Package Weight: 0.8 lbs View Product Details Log in to Order
1-3/4"	1/4"-28	Fine	KM-USA High Head	100	390414	Log in to view price
1/4"-28 x 1-3/4" KM-USA High Head Grade 8 (SAE) Cap Screw - 100 Pack Item #: 390414 Package Weight: 3 lbs View Product Details Log in to Order

View All

KM-USA Grade 8 (SAE) Hex Head Cap Screws Assortments

Storage Type: 24-Compartment Drawer

Name	Material	Finish	Measurement Type	Number of Pieces	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 3/8")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	SAE	620	1	40398	Log in to view price
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 3/8") Item #: 40398 Package Weight: 23.6 lbs View Product Details Log in to Order

Storage Type: 40-Hole Bin

Name	Material	Finish	Measurement Type	Number of Pieces	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 1/2")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	SAE	1,735	1	40390	Log in to view price
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 1/2") Item #: 40390 Package Weight: 98.6 lbs View Product Details Log in to Order
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (3/4" - 1")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	SAE	230	1	403911	Log in to view price
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (3/4" - 1") Item #: 403911 Package Weight: 119.2 lbs View Product Details Log in to Order

Storage Type: 80-Hole Bin

Name	Material	Finish	Measurement Type	Number of Pieces	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
KM-USA High Head Hex Head Grade 8 (SAE) Cap Screw Assortment (1/4" - 3/4")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	SAE	3,375	1	40395	Log in to view price
KM-USA High Head Hex Head Grade 8 (SAE) Cap Screw Assortment (1/4" - 3/4") Item #: 40395 Package Weight: 289.7 lbs View Product Details Log in to Order
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 3/4")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	SAE	1,910	1	40396	Log in to view price
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 3/4") Item #: 40396 Package Weight: 185.3 lbs View Product Details Log in to Order
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 5/8")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	SAE	2,720	1	40391	Log in to view price
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 5/8") Item #: 40391 Package Weight: 174.4 lbs View Product Details Log in to Order

Storage Type: Refill Kit

Name	Material	Finish	Measurement Type	Number of Pieces	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
Refill Kit for KM-USA High Head Grade 8 Hex Head Cap Screw Small Assortment (1/4" - 3/4")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	SAE	1,910	1	40396RE	Log in to view price
Refill Kit for KM-USA High Head Grade 8 Hex Head Cap Screw Small Assortment (1/4" - 3/4") Item #: 40396RE Package Weight: 107.1 lbs View Product Details Log in to Order
Refill Kit for KM-USA High Head Hex Grade 8 Head Cap Screw Small Assortment (1/4" - 5/8")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	SAE	2,720	1	40391RE	Log in to view price
Refill Kit for KM-USA High Head Hex Grade 8 Head Cap Screw Small Assortment (1/4" - 5/8") Item #: 40391RE Package Weight: 96.2 lbs View Product Details Log in to Order
Refill Kit for KM-USA High Head Hex Head Cap Screw Assortment (1/4" - 1/2")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	SAE	1,735	1	40390RE	Log in to view price
Refill Kit for KM-USA High Head Hex Head Cap Screw Assortment (1/4" - 1/2") Item #: 40390RE Package Weight: 59.5 lbs View Product Details Log in to Order
Refill Kit for KM-USA High Head Hex Head Grade 8 Cap Screw Large Assortment (3/4" - 1")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	SAE	230	1	403911RE	Log in to view price
Refill Kit for KM-USA High Head Hex Head Grade 8 Cap Screw Large Assortment (3/4" - 1") Item #: 403911RE Package Weight: 80.1 lbs View Product Details Log in to Order
Refill Kit for Large KM-USA High Head Hex Head Cap Screw Assortment (1/4" - 5/8")	Medium Carbon Alloy Steel	Zinc, Yellow Trivalent	SAE	3,375	1	40395RE	Log in to view price
Refill Kit for Large KM-USA High Head Hex Head Cap Screw Assortment (1/4" - 5/8") Item #: 40395RE Package Weight: 211.5 lbs View Product Details Log in to Order