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Standard Flat Washer

Washers provide a smooth bearing surface and are used under the head of a bolt and / or a nut. Flat washers are covered under the ASTM specification F844. These washers are unhardened and intended for general use.

Stock

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

Manufacturing

Portland Bolt has the ability to manufacture or provide nonstandard square, rectangular, or round washers meeting the requirements of ASTM A36, A572 Grade 50, or F436.

Dimensions

Bolt SizeABCWeight In Pounds
Per 100 Pieces
Inside DiameterOutside DiameterThickness
3/8 7/16 1 0.083 2
1/2 9/16 1-3/8 0.109 4
5/8 11/16 1-3/4 0.134 8
3/4 13/16 2 0.148 11
7/8 15/16 2-1/4 0.165 15
1 1-1/16 2-1/2 0.165 19
1-1/8 1-1/4 2-3/4 0.165 22
1-1/4 1-3/8 3 0.165 26
1-3/8 1-1/2 3-1/4 0.180 33
1-1/2 1-5/8 3-1/2 0.180 38
1-5/8 1-3/4 3-3/4 0.180 43
1-3/4 1-7/8 4 0.180 50
1-7/8 2 4-1/4 0.180 57
2 2-1/8 4-1/2 0.180 63
2-1/4 2-3/8 4-3/4 0.220 83
2-1/2 2-5/8 5 0.238 96
2-3/4 2-7/8 5-1/4 0.259 110
3 3-1/8 5-1/2 0.284 130

Dimensions per ASME B18.22.1 1965 (R1998)