Industry Semi Standard Flat Washers
Product Information

Industry Semi Standard Flat Washers

All of these washers are produced in the USA. Depending on the size, they are stamped or machined.

Steel: Low Carbon Steel, Commercial Case Hard, Black Oxide Finish

Tolerances:

ID and OD are +/-.010
Thickness Tolerance varies by size:
Up to 1/8" thick +.005/-.014
From 1/8 to 9/32" thick +.005/-.020
Flat and Parallel to within 0.005"



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Industry Semi Standard Flat Washers
Part
No.
Screw
Size
"A"
ID
"B"
OD
"C"
Thickness
81040 #0 1/16 1/8 .019
81041 #1 5/64 5/32 .019
81042 #2 3/32 3/16 .028
81043 #4 1/8 1/4 1/16
81044 #6 5/32 5/16 1/6
81046 #8 11/64 3/8 1/16
81047 #8 3/16 7/16 5/64
81048 1/4 9/32 1/2 5/64
81049 5/16 11/32 5/8 3/32
81050 5/16 11/32 11/16 1/8
81051 3/8 13/32 3/4 3/32
81052 3/8 13/32 1 1/8
81053 7/16 15/32 59/64 1/8
81054 1/2 17/32 1-1/16 3/16