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- Preferred sizes are for the most part from series previously designated "Standard Plate" and "SAE." Where common sizes existed in the two series, the SAE size is designated "N" (narrow) and the Standard Plate "W" (wide). These sizes as well as all other sizes of Type A Plain Washers are to be ordered by ID, OD and thickness dimensions.
- Nominal washer sizes are intended for use with comparable nominal screw or bolt sizes.
- The 0.734 in., 1.156 in. and 1.469 in. outside diameters avoid washers which could be used in coin operated devices.
Unit of Measure
Specifications
Product |
N/A Washers |
Unit of Measure |
N/A English |
Nominal Washer Size |
N/A 1/4 in |
Nominal Washer Size (Decimal) |
N/A 0.2500 in |
Standard Plate Size |
N/A Narrow |
Basic Inside Diameter (A) |
N/A 0.281 in |
Tolerance for Inside Diameter (A) |
N/A +0.015 in-0.005 in |
Basic Outside Diameter (B) |
N/A 0.625 in |
Tolerance for Outside Diameter (B) |
N/A +0.015 in-0.005 in |
Basic Thickness (C) |
N/A 0.065 in |
Max. Thickness (C) |
N/A 0.080 in |
Min. Thickness (C) |
N/A 0.051 in |
