USS Flat Washers

 

USS Flat Washers
Bolt Size Outside Diameter Inside Diameter Thickness Approx.
Quan. 
per 50#'s
Nom. Max Min Nom. Max Min American Standard 
(Gauge)
Max Min
3/16 9/16 0.593 0.531 1/4 0.281 0.250 18 (3/64) 0.65 0.36 18050
1/4 3/4 0.781 0.719 5/16 0.343 0.312 16 (1/16) .080 0.51 7450
5/16 7/8 0.906 0.844 3/8 0.406 0.375 14 (5/64) .104 0.64 4350
3/8 1" 1.031 0.969 7/16 0.469 0.438 14 (5/64) .104 .064 3350
7/16 1-1/4 1.281 1.219 1/2 0.531 0.500 14 (5/64) .104 0.64 2050
1/2 1-3/8 1.406 1.344 9/16 0.593 0.562 12 (7/64) .132 0.86 1300
9/16 1-1/2 1.531 1.469 5/8 0.656 0.625 21 (7/64) .132 0.86 1100
5/8 1-3/4 1.781 1.719 11/16 0.719 0.688 10 (9/64) .160 .108 650
3/4 2" 2.031 1.969 13/16 0.843 0.812 9 (5/32) .177 .122 455
7/8 2-1/4 2.281 2.219 15/16 0.969 0.938 8 (11/64) .192 .136 325
1" 2-1/2 2.531 2.469 1-1/16 1.094 1.063 8 (11/64) .192 .136 265
1-1/8 2-3/4 2.781 2.719 1-1/4 1.281 1.250 8(11/64) .192 .136 225
1-1/4 3" 3.031 2.969 1-3/8 1.406 1.375 8 (11/64) .192 .136 190
1-3/8 3-1/4 3.281 3.219 1-1/2 1.531 1.500 7 (3/16) .213 .153 150
1-1/2 3-1/2 3.631 3.469 1-5/8 1.656 1.625 7 (3/16) .213 .153 130
1-5/8 3-3/4 3.813 3.687 1-3/4 1.813 1.750 7 (3/16) .213 .153 115
1-3/4 4" 4.063 3.937 1-7/8 1.938 1.875 7 (3/16) .213 .153 100
1-7/8 4-1/4 4.313 4.187 2 2.063 2.000 7 (3/16) .213 .153 90
2" 4-1/2 4.563 4.437 2-1/8 2.188 2.125 7 (3/16) .213 .153 79
2-1/4 4-3/4 4.813 4.687 2-3/8 2.438 2.375 5 (7/32) .248 .193 60
2-1/2 5" 5.063 4.937 2-5/8 2.688 2.625 4 (15/64) .280 .210 52
2-3/4 5-1/4 5.313 5.187 2-7/8 2.938 2.875 3 (1/4) .310 .228 45
3" 5-1/2 5.563 5.437 3-1/8 3.188 3.125 2 (5/32) .327 .249 43