Flat Plain ANSI Type A Washer Size Table Chart

Hardware ANSI Menu

Size, dimensional and tolerance data given is for Type A Plain Flat Washers, ANSI/ASME B18.22.1

Type A plain washers designated by their nominal dimensions.
The Type B plain washers come in narrow, regular and wide series with proportions designed to distribute the load over larger areas of lower strength materials.

Plain washers are made of ferrous or non-ferrous metal, plastic or other material as specified. The tolerances indicated in the tables are intended for metal washers only.

 

All dimensions are in inches

Inside Diameter (ID)
Outside Diameter (OD)
Thickness
Nominal
Size
Tolerance
Nominal
Size
Tolerance
Basic
Max.
Min.
Plus
Minus
Plus
Minus
0.094
0.000
0.005
0.219
0.000
0.005
0.020
0.025
0.016
0.125
0.000
0.005
0.250
0.000
0.005
0.022
0.028
0.017
0.156
0.008
0.005
0.312
0.008
0.005
0.035
0.048
0.027
0.172
0.008
0.005
0.406
0.015
0.005
0.049
0.065
0.036
0.188
0.008
0.005
0.375
0.015
0.005
0.049
0.065
0.036
0.203
0.008
0.005
0.469
0.015
0.005
0.049
0.065
0.036
0.219
0.008
0.005
0.438
0.015
0.005
0.049
0.065
0.036
0.234
0.008
0.005
0.531
0.015
0.005
0.049
0.065
0.036
0.250
0.015
0.005
0.500
0.015
0.005
0.049
0.065
0.036
0.266
0.015
0.005
0.625
0.015
0.005
0.049
0.065
0.036
0.312
0.015
0.005
0.875
0.015
0.007
0.065
0.080
0.051
0.375
0.015
0.005
0.734a
0.015
0.007
0.065
0.080
0.051
0.375
0.015
0.005
1.125
0.015
0.007
0.065
0.080
0.051
0.438
0.015
0.005
0.875
0.030
0.007
0.083
0.104
0.064
0.438
0.015
0.005
1.375
0.030
0.007
0.083
0.104
0.064
0.500
0.015
0.005
1.125
0.030
0.007
0.083
0.104
0.064
0.500
0.015
0.005
1.625
0.030
0.007
0.083
0.104
0.064
0.562
0.015
0.005
1.250
0.030
0.007
0.109
0.132
0.086
0.562
0.015
0.005
1.875
0.030
0.007
0.109
0.132
0.086
0.625
0.015
0.005
1.375
0.030
0.007
0.109
0.132
0.086
0.625
0.015
0.005
2.125
0.030
0.007
0.134
0.160
0.108
0.688
0.030
0.007
0.030
0.007
0.134
0.160
0.108
0.688
0.030
0.007
2.375
0.030
0.007
0.165
0.192
0.136
0.812
0.030
0.007
1.750
0.030
0.007
0.148
0.177
0.122
0.812
0.030
0.007
2.875
0.030
0.007
0.165
0.192
0.136
0.938
0.030
0.007
2.000
0.030
0.007
0.165
0.192
0.136
0.938
0.030
0.007
3.375
0.045
0.010
0.180
0.213
0.153
1.062
0.030
0.007
2.250
0.030
0.007
0.165
0.192
0.136
1.062
0.045
0.010
3.875
0.045
0.010
0.238
0.280
0.210
1.250
0.030
0.007
2.500
0.030
0.007
0.165
0.192
0.136
1.375
0.030
0.007
2.750
0.030
0.007
0.165
0.192
0.136
1.500
0.045
0.010
3.000
0.045
0.010
0.180
0.213
0.153
1.625
0.045
0.010
3.250
0.045
0.010
0.180
0.213
0.153
1.688
0.045
0.010
3.500
0.045
0.010
0.180
0.213
0.153
1.812
0.045
0.010
3.750
0.045
0.010
0.180
0.213
0.153
1.938
0.045
0.010
4.000
0.045
0.010
0.180
0.213
0.153
2.062
0.045
0.010
4.250
0.045
0.010
0.180
0.213
0.153

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