F436 Flat Washers

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F436 Flat Washers

F436 flat washers are manufactured from carbon steel to meet or exceed ASTM F436. Zinc plated material will meet or exceed ASTM F1941. Hot-Dip Galvanized material will meet or exceed ASTM A153 and/or ASTM F2329. Hardness for plain and zinc plated washers is HRC 38-45 and HRC 26-45 for hot-dip galvanized washers per ASTM F436.

F436 Flat Washers
Bolt Size	Outside Diameter		Inside Diameter		Thickness
Bolt Size	Max	Min	Max	Min	Max	Min
1/2	1.094	1.031	.562	.531	.177	.097
5/8	1.344	1.281	.719	.687	.177	.122
3/4	1.500	1.438	.843	.812	.177	.122
7/8	1.781	1.719	.969	.938	.177	.136
1	2.031	1.969	1.156	1.125	.177	.136