asme-b18-22-1-type-a-plain-flat-washers

Dimensions of Metric Plain Washers

Nominal SizesPatternABC
Max2Min3MaxMinMaxMin
1.6Narrow2.091.954.003.700.700.50
Regular2.091.955.004.700.700.50
Wide2.091.956.005.700.900.60
2Narrow2.642.505.004.700.900.60
Regular2.642.506.005.700.900.60
Wide2.642.508.007.640.900.60
2.5Narrow3.143.006.005.700.900.60
Regular3.143.008.007.640.900.60
Wide3.143.0010.009.641.200.80
3Narrow3.683.507.006.640.900.60
Regular3.683.5010.009.641.200.80
Wide3.683.5012.0011.571.401.00
3.5Narrow4.184.009.008.641.200.80
Regular4.184.0010.009.641.401.00
Wide4.184.0015.0014.571.751.20
4Narrow4.884.7010.009.641.200.80
Regular4.884.7012.0011.571.401.00
Wide4.884.7016.0015.572.301.60
5Narrow5.785.6011.0010.571.401.00
Regular5.785.6015.0014.571.751.20
Wide5.785.6020.0019.482.301.60
6Narrow6.876.6513.0012.571.751.20
Regular6.876.6518.8018.281.751.20
Wide6.876.6525.4024.882.301.60
8Narrow9.128.9018.8018.282.301.60
Regular9.128.9025.4024.882.301.60
Wide9.128.9032.0031.382.802.00
10Narrow11.1210.8520.0019.482.301.60
Regular11.1210.8528.0027.482.802.00
Wide11.1210.8539.0038.383.502.50
12Narrow13.5713.3025.4024.882.802.00
Regular13.5713.3034.0033.383.502.50
Wide13.5713.3044.0043.383.502.50
14Narrow15.5215.2528.0027.482.802.00
Regular15.5215.2539.0038.383.502.50
Wide15.5215.2550.0049.384.003.00
16Narrow17.5217.2532.0031.383.502.50
Regular17.5217.2544.0043.384.003.00
Wide17.6817.2556.0054.804.603.50
20Narrow22.1321.8039.0038.384.003.00
Regular22.1321.8050.0049.004.603.50
Wide22.1321.8066.0064.805.104.00
24Narrow26.1225.6044.0043.004.603.50
Regular26.1225.6056.0054.805.104.00
Wide26.1225.6072.0070.805.604.50
30Narrow33.0232.4056.0054.805.104.00
Regular33.0232.4072.0070.805.604.50
Wide33.0232.4090.0088.606.405.00
36Narrow38.9238.3066.0064.805.604.50
Regular38.9238.3090.0088.606.405.00
Wide38.9238.30110.00108.608.507.00

Notes :

  • Nominal washers sizes are intended for use with comparable nominal screw or bolt sizes.
  • The 18.80/18.28 and 25.40/24.88 mm outside diameter avoid washers which could be used in coin operated devices.