USS and SAE Washer Dimensions

Flat Washer Measurements
Size USS SAE
Inside Diameter
(A)
Outside Diameter
(B)
Thickness
(C)
Inside Diameter
(A)
Outside Diameter
(B)
Thickness
(C)
#2 - - - 3/32 1/4 0.020
#4 - - - 1/8 5/16 0.032
#6 - - - 5/32 3/8 0.049
#8 - - - 3/16 7/16 0.049
#10 - - - 7/32 1/2 0.049
#12 - - - 1/4 9/16 0.065
1/4 5/16 0.734 0.065 9/32 5/8 0.065
5/16 3/8 7/8 0.083 11/32 11/16 0.065
3/8 7/16 1 0.083 13/32 13/16 0.065
7/16 1/2 1-1/4 0.083 15/32 15/16 0.065
1/2 9/16 1-3/8 0.109 17/32 1-1/16 0.095
9/16 5/8 1-15/32 0.109 19/32 1-5/32 0.095
5/8 11/16 1-3/4 0.134 21/32 1-5/16 0.095
3/4 13/16 2 0.148 13/16 1-15/32 0.134
7/8 15/16 2-1/4 0.165 15/16 1-3/4 0.134
1 1-1/16 2-1/2 0.165 1-1/16 2 0.134
1-1/8 1-1/4 2-3/4 0.165 - - -
1-1/4 1-3/8 3 0.165 - - -
1-3/8 1-1/2 3-1/4 0.180 - - -
1-1/2 1-5/8 3-1/2 0.180 - - -
1-5/8 1-3/4 3-3/4 0.180 - - -
1-3/4 1-7/8 4 0.180 - - -
2 2-1/8 4-1/2 0.213 - - -

 

See Also