F436 Flat Washers

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
1/2 1.063 .531 .097/.177

5/8 1.313 .688 .122/.177
3/4 1.469 .813 .122/.177
7/8 1.750 .938 .136/.177
1 2.000 1.063 .136/.177
1-1/8 2.250 1.188 .136/.177
1-1/4 2.500 1.375 .136/.177
1-3/8 2.750 1.531 .136/.177
1-1/2 3.000 1.625 .136/.177
1-5/8 3.250 1.770 .178/.280
1-3/4 3.375 1.875 .178/.280
1-7/8 3.500 2.000 .178/.280
2 3.750 2.125 .178/.280
2-1/4 4.000 2.407 .240/.340
2-1/2 4.500 2.657 .240/.340
2-3/4 5.000 2.907 .240/.340
3 5.500 3.157 .240/.340