USS Flat Washers

38 results

KM-USA Class 10 Flat Washers

Grade 8 (USS) Flat Washers - Yellow Zinc Plated

KM-USA Class 10 Flat Washers

Our domestic Class 10 alloy washers resist bending and distortion to ensure full clamp force is obtained from our KM-USA metric 10.9 cap screws. Yellow zinc plating ensures moderate protection from corrosion, while the 32-39 hardness ensures durability. Meets ISO 7089, 898-3 standards and is made in the U.S.A.

Bolt Size	Inside Diameter	Outside Diameter	Thickness	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
M6	6.4 mm	11.5 mm	1.5 mm	100	453606	Log in to view price
M6 KM-USA Class 10 Yellow Zinc Plated Flat Washer - 100 Pack Item #: 453606 Package Weight: 0.3 lbs View Product Details Log in to Order
M8	8.4 mm	15.5 mm	1.5 mm	50	453608	Log in to view price
M8 KM-USA Class 10 Yellow Zinc Plated Flat Washer - 50 Pack Item #: 453608 Package Weight: 0.2 lbs View Product Details Log in to Order
M10	10.5 mm	19.4 mm	2 mm	50	453610	Log in to view price
M10 KM-USA Class 10 Yellow Zinc Plated Flat Washer - 50 Pack Item #: 453610 Package Weight: 0.4 lbs View Product Details Log in to Order
M12	13 mm	23.4 mm	2.5 mm	50	453612	Log in to view price
M12 KM-USA Class 10 Yellow Zinc Plated Flat Washer - 50 Pack Item #: 453612 Package Weight: 0.7 lbs View Product Details Log in to Order
M14	15 mm	27.4 mm	2.5 mm	25	453614	Log in to view price
M14 KM-USA Class 10 Yellow Zinc Plated Flat Washer - 25 Pack Item #: 453614 Package Weight: 0.5 lbs View Product Details Log in to Order
M16	17 mm	29.4 mm	3.1 mm	25	453616	Log in to view price
M16 KM-USA Class 10 Yellow Zinc Plated Flat Washer - 25 Pack Item #: 453616 Package Weight: 0.6 lbs View Product Details Log in to Order
M18	19 mm	33.3 mm	3.1 mm	25	453618	Log in to view price
M18 KM-USA Class 10 Yellow Zinc Plated Flat Washer - 25 Pack Item #: 453618 Package Weight: 0.8 lbs View Product Details Log in to Order
M20	21 mm	36.3 mm	3.1 mm	25	453620	Log in to view price
M20 KM-USA Class 10 Yellow Zinc Plated Flat Washer - 25 Pack Item #: 453620 Package Weight: 0.9 lbs View Product Details Log in to Order
M22	23 mm	38.3 mm	3.1 mm	10	453622	Log in to view price
M22 KM-USA Class 10 Yellow Zinc Plated Flat Washer - 10 Pack Item #: 453622 Package Weight: 0.4 lbs View Product Details Log in to Order
M24	25 mm	43.3 mm	3.8 mm	10	453624	Log in to view price
M24 KM-USA Class 10 Yellow Zinc Plated Flat Washer - 10 Pack Item #: 453624 Package Weight: 0.7 lbs View Product Details Log in to Order

Grade 8 (USS) Flat Washers - Yellow Zinc Plated

Made for heavy loads, these yellow zinc‑plated Grade 8 (USS) washers offer enhanced thickness to resist dishing. Their close‑fitting ID boosts clamp capability, while the corrosion‑resistant finish extends service life. Pair with Grade 8 bolts for reliable performance in structural or industrial assemblies.

Bolt Size	Inside Diameter	Outside Diameter	Thickness	Material	Finish	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1/4"	9/32"	3/4"	5/64"	Alloy Steel	Zinc Yellow with Hexavalent Chromate	100	373804	Log in to view price
1/4" Grade 8 (USS) Yellow Zinc Plated Alloy Steel Flat Washer - 100 Pack Item #: 373804 Package Weight: 0.9 lbs View Product Details Log in to Order
1/4"	9/32"	3/4"	5/64"	Alloy Steel	Zinc Yellow with Hexavalent Chromate	200	3738041	Log in to view price
1/4" Grade 8 (USS) Yellow Zinc Plated Alloy Steel Flat Washer - 200 Pack Item #: 3738041 Package Weight: 1.7 lbs View Product Details Log in to Order
1/4"	9/32"	3/4"	5/64"	Alloy Steel	Zinc Yellow with Hexavalent Chromate	500	3738042	Log in to view price
1/4" Grade 8 (USS) Yellow Zinc Plated Alloy Steel Flat Washer - 500 Pack Item #: 3738042 Package Weight: 4 lbs View Product Details Log in to Order
5/16"	11/32"	7/8"	3/32"	Alloy Steel	Zinc Yellow with Hexavalent Chromate	100	373805	Log in to view price
5/16" Grade 8 (USS) Yellow Zinc Plated Alloy Steel Flat Washer - 100 Pack Item #: 373805 Package Weight: 1.3 lbs View Product Details Log in to Order
5/16"	11/32"	7/8"	3/32"	Alloy Steel	Zinc Yellow with Hexavalent Chromate	200	3738051	Log in to view price
5/16" Grade 8 (USS) Yellow Zinc Plated Alloy Steel Flat Washer - 200 Pack Item #: 3738051 Package Weight: 2.3 lbs View Product Details Log in to Order
5/16"	11/32"	7/8"	3/32"	Alloy Steel	Zinc Yellow with Hexavalent Chromate	500	3738052	Log in to view price
5/16" Grade 8 (USS) Yellow Zinc Plated Alloy Steel Flat Washer - 500 Pack Item #: 3738052 Package Weight: 6.1 lbs View Product Details Log in to Order
3/8"	13/32"	1"	3/32"	Alloy Steel	Zinc Yellow with Hexavalent Chromate	100	373806	Log in to view price
3/8" Grade 8 (USS) Yellow Zinc Plated Alloy Steel Flat Washer - 100 Pack Item #: 373806 Package Weight: 1.6 lbs View Product Details Log in to Order
3/8"	13/32"	1"	3/32"	Alloy Steel	Zinc Yellow with Hexavalent Chromate	200	3738061	Log in to view price
3/8" Grade 8 (USS) Yellow Zinc Plated Alloy Steel Flat Washer - 200 Pack Item #: 3738061 Package Weight: 3.2 lbs View Product Details Log in to Order
7/16"	15/32"	1-1/4"	3/32"	Alloy Steel	Zinc Yellow with Hexavalent Chromate	50	373807	Log in to view price
7/16" Grade 8 (USS) Yellow Zinc Plated Alloy Steel Flat Washer - 50 Pack Item #: 373807 Package Weight: 1.4 lbs View Product Details Log in to Order
7/16"	15/32"	1-1/4"	3/32"	Alloy Steel	Zinc Yellow with Hexavalent Chromate	100	3738071	Log in to view price
7/16" Grade 8 (USS) Yellow Zinc Plated Alloy Steel Flat Washer - 100 Pack Item #: 3738071 Package Weight: 2 lbs View Product Details Log in to Order
1/2"	17/32"	1-3/8"	1/8"	Alloy Steel	Zinc Yellow with Hexavalent Chromate	50	373808	Log in to view price
1/2" Grade 8 (USS) Yellow Zinc Plated Alloy Steel Flat Washer - 50 Pack Item #: 373808 Package Weight: 2.2 lbs View Product Details Log in to Order
1/2"	17/32"	1-3/8"	1/8"	Alloy Steel	Zinc Yellow with Hexavalent Chromate	100	3738081	Log in to view price
1/2" Grade 8 (USS) Yellow Zinc Plated Alloy Steel Flat Washer - 100 Pack Item #: 3738081 Package Weight: 4.5 lbs View Product Details Log in to Order