Dimensions of Type B Plain Washers
| Dimensions of Type B Plain Washers | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Normal Washer Size (1) | Series | A | B | C | ||||||
| Inside Diameter | Outside Diameter | Thickness | ||||||||
| Basic | Tolerance | Basic | Tolerance | |||||||
| Plus | Minus | Plus | Minus | Basic | Plus | Minus | ||||
| 1/4 (0.250) | Narrow | 0.281 | 0.015 | 0.005 | 0.500 | 0.015 | 0.005 | 0.063 | 0.071 | 0.056 |
| Regular | 0.281 | 0.015 | 0.005 | 0.734 (2) | 0.015 | 0.007 | 0.063 | 0.071 | 0.056 | |
| Wide | 0.281 | 0.015 | 0.005 | 1.000 | 0.015 | 0.007 | 0.063 | 0.071 | 0.056 | |
| 3/8 (0.375) | Narrow | 0.406 | 0.015 | 0.005 | 0.734 (2) | 0.015 | 0.007 | 0.063 | 0.071 | 0.056 |
| Regular | 0.406 | 0.015 | 0.005 | 1.000 | 0.015 | 0.007 | 0.063 | 0.071 | 0.056 | |
| Wide | 0.406 | 0.015 | 0.005 | 1.250 | 0.030 | 0.007 | 0.100 | 0.112 | 0.090 | |
| 1/2 (0.500) | Narrow | 0.531 | 0.015 | 0.005 | 1.000 | 0.015 | 0.007 | 0.063 | 0.071 | 0.056 |
| Regular | 0.531 | 0.015 | 0.005 | 1.250 | 0.030 | 0.007 | 0.100 | 0.112 | 0.090 | |
| Wide | 0.531 | 0.015 | 0.005 | 1.750 | 0.030 | 0.007 | 0.100 | 0.112 | 0.090 | |
| 5/8 (0.625) | Narrow | 0.656 | 0.030 | 0.007 | 1.250 | 0.030 | 0.007 | 0.100 | 0.112 | 0.090 |
| Regular | 0.656 | 0.030 | 0.007 | 1.750 | 0.030 | 0.007 | 0.100 | 0.112 | 0.090 | |
| Wide | 0.656 | 0.030 | 0.007 | 2.250 | 0.030 | 0.007 | 0.160 | 0.174 | 0.146 | |
| 3/4 (0.750) | Narrow | 0.812 | 0.030 | 0.007 | 1.375 | 0.030 | 0.007 | 0.100 | 0.112 | 0.090 |
| Regular | 0.812 | 0.030 | 0.007 | 2.000 | 0.030 | 0.007 | 0.100 | 0.112 | 0.090 | |
| Wide | 0.812 | 0.030 | 0.007 | 2.500 | 0.030 | 0.007 | 0.160 | 0.174 | 0.146 | |
| 7/8 (0.875) | Narrow | 0.938 | 0.030 | 0.007 | 1.469 (2) | 0.030 | 0.007 | 0.100 | 0.112 | 0.090 |
| Regular | 0.938 | 0.030 | 0.007 | 2.250 | 0.030 | 0.007 | 0.160 | 0.174 | 0.146 | |
| Wide | 0.938 | 0.030 | 0.007 | 2.750 | 0.030 | 0.007 | 0.160 | 0.174 | 0.146 | |
| 1 (1.000) | Narrow | 1.062 | 0.030 | 0.007 | 1.750 | 0.030 | 0.007 | 0.100 | 0.122 | 0.090 |
| Regular | 1.062 | 0.030 | 0.007 | 2.500 | 0.030 | 0.007 | 0.160 | 0.174 | 0.146 | |
| Wide | 1.062 | 0.030 | 0.007 | 3.000 | 0.030 | 0.007 | 0.160 | 0.174 | 0.146 | |
| 1-1/8 (1.125) | Narrow | 1.188 | 0.030 | 0.007 | 2.000 | 0.030 | 0.007 | 0.100 | 0.112 | 0.090 |
| Regular | 1.188 | 0.030 | 0.007 | 2.750 | 0.030 | 0.007 | 0.160 | 0.174 | 0.146 | |
| Wide | 1.188 | 0.030 | 0.007 | 3.250 | 0.030 | 0.007 | 0.160 | 0.174 | 0.146 | |
| 1-1/4 (1.250) | Narrow | 1.312 | 0.030 | 0.007 | 2.250 | 0.303 | 0.007 | 0.160 | 0.174 | 0.146 |
| Regular | 1.312 | 0.030 | 0.007 | 3.000 | 0.030 | 0.007 | 0.160 | 0.174 | 0.146 | |
| Wide | 1.312 | 0.045 | 0.010 | 3.500 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 | |
| 1-3/8 (1.375) | Narrow | 1.438 | 0.030 | 0.007 | 2.500 | 0.030 | 0.007 | 0.160 | 0.174 | 0.146 |
| Regular | 1.438 | 0.030 | 0.007 | 3.250 | 0.030 | 0.007 | 0.160 | 0.174 | 0.146 | |
| Wide | 1.438 | 0.045 | 0.010 | 3.750 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 | |
| 1-1/2 (1.500) | Narrow | 1.562 | 0.303 | 0.007 | 2.750 | 0.030 | 0.007 | 0.160 | 0.174 | 0.146 |
| Regular | 1.562 | 0.045 | 0.010 | 3.500 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 | |
| Wide | 1.562 | 0.045 | 0.010 | 4.000 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 | |
| 1-5/8 (1.625) | Narrow | 1.750 | 0.303 | 0.007 | 3.000 | 0.030 | 0.007 | 0.160 | 0.174 | 0.146 |
| Regular | 1.750 | 0.045 | 0.010 | 3.750 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 | |
| Wide | 1.750 | 0.045 | 0.010 | 4.250 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 | |
| 1-3/4 (1.750) | Narrow | 1.875 | 0.300 | 0.007 | 3.250 | 0.303 | 0.007 | 0.160 | 0.174 | 0.146 |
| Regular | 1.875 | 0.045 | 0.010 | 4.000 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 | |
| Wide | 1.875 | 0.045 | 0.010 | 4.500 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 | |
| 1-7/8 (1.875) | Narrow | 2.000 | 0.045 | 0.010 | 3.500 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 |
| Regular | 2.000 | 0.045 | 0.010 | 4.250 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 | |
| Wide | 2.000 | 0.045 | 0.010 | 4.750 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 | |
| 2 (2.000) | Narrow | 2.125 | 0.045 | 0.010 | 3.750 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 |
| Regular | 2.125 | 0.045 | 0.010 | 4.500 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 | |
| Wide | 2.125 | 0.045 | 0.010 | 5.000 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 | |
| 2-1/4 (2.250) | Narrow | 2.375 | 0.045 | 0.010 | 4.000 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 |
| Regular | 2.375 | 0.045 | 0.010 | 5.000 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 | |
| Wide | 2.375 | 0.065 | 0.010 | 5.500 | 0.065 | 0.010 | 0.375 | 0.393 | 0.357 | |
| 2-1/2 (2.500) | Narrow | 2.625 | 0.045 | 0.010 | 4.500 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 |
| Regular | 2.625 | 0.065 | 0.010 | 5.500 | 0.065 | 0.010 | 0.375 | 0.393 | 0.357 | |
| Wide | 2.620 | 0.065 | 0.010 | 6.000 | 0.065 | 0.010 | 0.375 | 0.393 | 0.357 | |
| 2-3/4 (2.750) | Narrow | 2.875 | 0.045 | 0.010 | 5.000 | 0.045 | 0.010 | 0.250 | 0.266 | 0.234 |
| Regular | 2.875 | 0.065 | 0.010 | 6.000 | 0.065 | 0.010 | 0.375 | 0.393 | 0.357 | |
| Wide | 2.875 | 0.065 | 0.010 | 6.500 | 0.065 | 0.010 | 0.375 | 0.393 | 0.357 | |
| 3 (3.000) | Narrow | 3.125 | 0.065 | 0.010 | 5.500 | 0.065 | 0.010 | 0.375 | 0.393 | 0.357 |
| Regular | 3.125 | 0.065 | 0.010 | 6.500 | 0.065 | 0.010 | 0.375 | 0.393 | 0.357 | |
| Wide | 3.125 | 0.065 | 0.010 | 7.000 | 0.065 | 0.010 | 0.375 | 0.393 | 0.357 | |