Washers Dimensions Comparison Chart

Metric Washers

Th means thickness in this table.

BOLT SIZEFORM AFORM BFORM CFORM DFORM EFORM FFORM G
O/DThO/DThO/DThO/DThO/DThO/DThO/DTh
M12.50.3
M1.23.00.3
M1.43.00.3
M1.64.00.3
M25.00.3
M2.25.00.5
M2.56.50.5
M37.00.5
M3.57.00.5
M49.00.810.00.8
M4.59.00.8
M510.01.012.51.010.01.015.01.6
M612.51.612.50.814.01.614.00.112.51.618.02.0
M714.01.614.00.814.01.621.02.0
M817.01.617.01.021.01.621.01.017.01.621.01.624.02.0
M1021.02.021.01.224.02.024.01.221.02.024.02.030.02.5
M1224.02.524.01.628.02.528.01.624.02.528.02.536.03.0
M1428.02.528.01.630.02.530.01.628.02.530.02.542.03.0
M1630.03.030.02.034.03.034.02.030.03.034.03.048.04.0
M1834.03.034.02.037.03.037.02.034.03.037.03.054.04.0
M2037.03.037.02.039.03.039.02.037.03.039.03.060.05.0
M2239.03.039.02.044.03.044.02.039.03.044.03.066.05.0
M2444.04.044.02.550.04.050.02.544.04.050.04.072.06.0
M2750.04.050.02.556.04.056.02.550.04.056.04.081.06.0
M3056.04.056.02.560.04.060.02.556.04.060.04.090.08.0
M3360.05.060.03.066.05.066.03.060.05.066.05.099.08.0
M3666.05.066.03.072.05.072.03.066.05.072.05.0108.010.0
M3972.06.072.03.077.06.077.03.072.06.077.06.0117.010.0
M4278.07.078.07.0
M4585.07.085.07.0
M4892.08.092.08.0
M5298.08.098.08.0
M56105.09.0105.09.0
M60110.09.0110.09.0
M64115.09.0115.09.0
M68120.010.0120.010.0
M72125.010.0
M76135.010.0
M80140.012.0
M85145.012.0
M90160.012.0
M95165.012.0
M100175.014.0

Imperial Washers

Bolt SizeTable 3Table 4
LightHeavyLightHeavy
O/DThicknessThicknessO/DThicknessThickness
1/4Inch0.5620.0300.0560.6250.0400.056
5/16Inch0.6250.0400.0720.7500.0480.072
3/8Inch0.7500.0480.0720.8750.0480.072
7/16Inch0.8750.0480.0921.0000.0560.092
1/2Inch1.0000.0560.0921.1250.0560.092
9/16Inch1.1250.0560.1041.2500.0560.104
5/8Inch1.2500.0720.1161.3750.0720.116
3/4Inch1.5000.0720.1281.6250.0720.128
7/8Inch1.6250.0720.1441.8750.0720.144
1Inch1.8750.0720.1602.1250.0920.160
1.1/8Inch2.1250.0920.1762.3750.1040.176
1.1/4Inch2.3750.1160.1762.6250.1160.176
1.3/8Inch2.6250.1922.8750.1280.192
1.1/2Inch2.8750.1923.1250.1280.192
1.3/4Inch3.3750.2123.6250.1280.212
2Inch3.6250.2124.1250.1280.212
Repair Washers
BOLT SIZEO/DThickness
M5x20x1.5
M5x25x1.5
M5x30x1.5
M6x20x1.5
M6x25x1.5
M6x30x1.5
M6x40x1.5
M6x50x1.5
M8x25x1.5
M8x30x1.5
M8x40x1.5
M8x50x1.5
M10x25x1.5
M10x30x1.5
M10x40x1.5
M10x50x1.5
M12x40x1.5
M12x50x1.5

Repair washers are also known as:

  • Penny Washers
  • Mudguard Washers
  • Mudwing Washers
Other Washers
BOLT SIZE
M3
M4
M5
M61/4"
M85/16"
M103/8"
M121/2"
M14
M165/8"
M18
M203/4"
M227/8"
M241"
M27
M30
M33
M36

Some other washers we have available are:

  • Helical Spring Washers
  • Shakeproof Washers
  • Nord-Lock Washers
  • Belleville Washers

Finishes available:

  • Plain Carbon Steel
  • BZP
  • A2-304 Stainless Steel
  • A4-316 Stainless Steel
  • Galvanised
  • Brass
  • Nylon

Please Note: Not all washers are available in every finish. Please contact us for more details.