Round Hardened Steel Washers

Washers provide a smooth bearing surface and are used under the head of a bolt and / or a nut. The chemical, mechanical, and dimensional requirements for hardened washers are covered under the ASTM specification F436. These washers are through hardened or carburized to add strength, but are physically smaller than a standard F844 flat washer. They are the recommended washer for any fastener other than a low carbon steel bolt.

STOCK

Diameters: 1/2 2-3/4
Origin: Domestic
Finish: Black and hot-dip galvanized

Bolt Size	B	A	C		Weight in Pounds Per 1000 Pieces
	Outside Diameter	Inside Diameter	Thickness
	Outside Diameter	Inside Diameter	Min	Max
1/2	1-1/16	17/32	0.097	0.177	18
5/8	1-5/16	11/16	0.122	0.177	33
3/4	1-15/32	13/16	0.122	0.177	41
7/8	1-3/4	15/16	0.136	0.177	64
1	2	1-1/16	0.136	0.177	82
1-1/8	2-1/4	1-3/16	0.136	0.177	105
1-1/4	2-1/2	1-3/8	0.136	0.177	133
1-3/8	2-3/4	1-1/2	0.136	0.177	163
1-1/2	3	1-5/8	0.136	0.177	200
1-5/8	3-1/4	1-3/4	0.178	0.28	320
1-3/4	3-3/8	1-7/8	0.178	0.28	307
1-7/8	3-1/2	2	0.178	0.28	360
2	3-3/4	2-1/8	0.178	0.28	380
2-1/4	4	2-3/8	0.24	0.34	560
2-1/2	4-1/2	2-5/8	0.24	0.34	720
2-3/4	5	2-7/8	0.24	0.34	920
3	5-1/2	3-1/8	0.24	0.34	1040
3-1/4	6	3-3/8	0.24	0.34	1350
3-1/2	6-1/2	3-5/8	0.24	0.34	1633
3-3/4	7	3-7/8	0.24	0.34	1880
4	7-1/2	4-1/8	0.24	0.34	2200

Dimensions per ASTM F436