• Nominal washer sizes are intended for use with comparable nominal screw or bolt sizes.
  • Inside and outside diameters shall be concentric within at least the inside diameter tolerance.
  • The 0.734" and 1.469" outside diameters avoid washers which could be used in coin operated devices.
  • Washers shall be flat within 0.005" for basic outside diameters up to and including 0.875" and within 0.010" for larger outside diameters.
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Item #

Description

Nominal Washer Size

Standard Plate Size

Basic (A)

Basic (B)

Basic (C)

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N/A Type B Plain Washer, 0.068" I.D N/A No. 0 N/A Narrow N/A 0.068 in N/A 0.125 in N/A 0.025 in
N/A Type B Plain Washer, 0.084" I.D N/A No. 1 N/A Narrow N/A 0.084 in N/A 0.156 in N/A 0.025 in
N/A Type B Plain Washer, 0.094" I.D N/A No. 2 N/A Narrow N/A 0.094 in N/A 0.188 in N/A 0.025 in
N/A Type B Plain Washer, 0.109" I.D N/A No. 3 N/A Narrow N/A 0.109 in N/A 0.219 in N/A 0.025 in
N/A Type B Plain Washer, 0.125" I.D N/A No. 4 N/A Narrow N/A 0.125 in N/A 0.250 in N/A 0.032 in
N/A Type B Plain Washer, 0.141" I.D N/A No. 5 N/A Narrow N/A 0.141 in N/A 0.281 in N/A 0.032 in
N/A Type B Plain Washer, 0.156" I.D N/A No. 6 N/A Narrow N/A 0.156 in N/A 0.312 in N/A 0.032 in
N/A Type B Plain Washer, 0.188" I.D N/A No. 8 N/A Narrow N/A 0.188 in N/A 0.375 in N/A 0.040 in
N/A Type B Plain Washer, 0.203" I.D N/A No. 10 N/A Narrow N/A 0.203 in N/A 0.406 in N/A 0.040 in
N/A Type B Plain Washer, 0.234" I.D N/A No. 12 N/A Narrow N/A 0.234 in N/A 0.438 in N/A 0.040 in
N/A Type B Plain Washer, 0.281" I.D N/A 1/4 in N/A Narrow N/A 0.281 in N/A 0.500 in N/A 0.063 in
N/A Type B Plain Washer, 0.344" I.D N/A 5/16 in N/A Narrow N/A 0.344 in N/A 0.625 in N/A 0.063 in
N/A Type B Plain Washer, 0.406" I.D N/A 3/8 in N/A Narrow N/A 0.406 in N/A 0.734 in N/A 0.063 in
N/A Type B Plain Washer, 0.469" I.D N/A 7/16 in N/A Narrow N/A 0.469 in N/A 0.875 in N/A 0.063 in
N/A Type B Plain Washer, 0.531" I.D N/A 1/2 in N/A Narrow N/A 0.531 in N/A 1.000 in N/A 0.063 in
N/A Type B Plain Washer, 0.594" I.D N/A 9/16 in N/A Narrow N/A 0.594 in N/A 1.125 in N/A 0.063 in
N/A Type B Plain Washer, 0.656" I.D N/A 5/8 in N/A Narrow N/A 0.656 in N/A 1.250 in N/A 0.100 in
N/A Type B Plain Washer, 0.812" I.D N/A 3/4 in N/A Narrow N/A 0.812 in N/A 1.375 in N/A 0.100 in
N/A Type B Plain Washer, 0.938" I.D N/A 7/8 in N/A Narrow N/A 0.938 in N/A 1.469 in N/A 0.100 in
N/A Type B Plain Washer, 1.062" I.D N/A 1 in N/A Narrow N/A 1.062 in N/A 1.750 in N/A 0.100 in
N/A Type B Plain Washer, 1.188" I.D N/A 1-1/8 in N/A Narrow N/A 1.188 in N/A 2.000 in N/A 0.100 in
N/A Type B Plain Washer, 1.312" I.D N/A 1-1/4 in N/A Narrow N/A 1.312 in N/A 2.250 in N/A 0.160 in
N/A Type B Plain Washer, 1.438" I.D N/A 1-3/8 in N/A Narrow N/A 1.438 in N/A 2.500 in N/A 0.160 in
N/A Type B Plain Washer, 1.562" I.D N/A 1-1/2 in N/A Narrow N/A 1.562 in N/A 2.750 in N/A 0.160 in
N/A Type B Plain Washer, 1.750" I.D N/A 1-5/8 in N/A Narrow N/A 1.750 in N/A 3.000 in N/A 0.160 in
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