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Mil. Spec. Washers
Choose these washers for their adherence to strict military standards for material and construction.
Cadmium- and zinc yellow-chromate plated steel washers are corrosion resistant in wet environments.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Cadmium-Plated Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
MS27183 | ||||||||
| No. 1 | 0.078" | 0.188" | 0.016"-0.025" | Rockwell B40 | MS27183-1 | 100 | 000000000 | 00000 |
| No. 2 | 0.094" | 0.250" | 0.016"-0.025" | Rockwell B40 | MS27183-2; ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 3 | 0.125" | 0.250" | 0.017"-0.028" | Rockwell B40 | MS27183-3 | 100 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.312" | 0.025"-0.040" | Rockwell B40 | MS27183-4; ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.375" | 0.025"-0.040" | Rockwell B40 | MS27183-44 | 100 | 000000000 | 0000 |
| No. 5 | 0.141" | 0.281" | 0.025"-0.040" | Rockwell B40 | MS27183-45 | 100 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.250" | 0.013"-0.020" | Rockwell B40 | MS27183-43 | 100 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.312" | 0.027"-0.048" | Rockwell B40 | MS27183-5 | 100 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.375" | 0.036"-0.065" | Rockwell B40 | MS27183-6; ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 8 | 0.188" | 0.375" | 0.036"-0.065" | Rockwell B40 | MS27183-7 | 100 | 000000000 | 0000 |
| No. 8 | 0.188" | 0.438" | 0.036"-0.065" | Rockwell B40 | MS27183-41; ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 8 | 0.188" | 0.500" | 0.051"-0.080" | Rockwell B40 | MS27183-46 | 100 | 000000000 | 0000 |
| No. 10 | 0.219" | 0.365" | 0.025"-0.040" | Rockwell B40 | MS27183-47 | 100 | 000000000 | 0000 |
| No. 10 | 0.219" | 0.438" | 0.036"-0.065" | Rockwell B40 | MS27183-8 | 100 | 000000000 | 0000 |
| No. 10 | 0.219" | 0.500" | 0.036"-0.065" | Rockwell B40 | MS27183-42; ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 12 | 0.250" | 0.562" | 0.025"-0.040" | Rockwell B40 | MS27183-49 | 100 | 000000000 | 0000 |
| No. 12 | 0.250" | 0.562" | 0.051"-0.080" | Rockwell B40 | MS27183-9; ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 12 | 0.250" | 0.625" | 0.025"-0.040" | Rockwell B40 | MS27183-50 | 100 | 000000000 | 0000 |
| No. 12 | 0.250" | 0.938" | 0.051"-0.080" | Rockwell B40 | MS27183-48 | 25 | 000000000 | 0000 |
| No. 12 | 0.250" | 1.000" | 0.051"-0.080" | Rockwell B40 | MS27183-51 | 25 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.625" | 0.051"-0.080" | Rockwell B40 | MS27183-10; ASME B18.21.1 | 100 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.734" | 0.051"-0.080" | Rockwell B40 | MS27183-52 | 100 | 000000000 | 00000 |
| 1/4" | 0.312" | 0.500" | 0.027"-0.048" | Rockwell B40 | MS27183-54 | 50 | 000000000 | 00000 |
| 1/4" | 0.312" | 0.875" | 0.051"-0.075" | Rockwell B40 | MS27183-53 | 25 | 000000000 | 0000 |
| 1/4" | 0.313" | 0.734" | 0.051"-0.080" | Rockwell B40 | MS27183-11; ASME B18.21.1 | 50 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.688" | 0.051"-0.080" | Rockwell B40 | MS27183-12; ASME B18.21.1 | 100 | 000000000 | 00000 |
| 5/16" | 0.375" | 0.625" | 0.027"-0.048" | Rockwell B40 | MS27183-56 | 50 | 000000000 | 0000 |
| 5/16" | 0.375" | 0.734" | 0.064"-0.094" | Rockwell B40 | MS27183-55 | 50 | 000000000 | 00000 |
| 5/16" | 0.375" | 0.875" | 0.064"-0.104" | Rockwell B40 | MS27183-13; ASME B18.21.1 | 50 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.812" | 0.051"-0.080" | Rockwell B40 | MS27183-14; ASME B18.21.1 | 50 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.875" | 0.051"-0.070" | Rockwell B40 | MS27183-57 | 50 | 000000000 | 0000 |
| 3/8" | 0.412" | 0.625" | 0.025"-0.040" | Rockwell B40 | MS27183-58 | 50 | 000000000 | 0000 |
| 3/8" | 0.438" | 0.875" | 0.051"-0.080" | Rockwell B40 | MS27183-60 | 50 | 000000000 | 00000 |
| 3/8" | 0.438" | 1.365" | 0.064"-0.104" | Rockwell B40 | MS27183-59 | 10 | 000000000 | 00000 |
| 3/8" | 0.438" | 1.625" | 0.051"-0.104" | Rockwell B40 | MS27183-61 | 10 | 000000000 | 00000 |
| 7/16" | 0.438" | 1.000" | 0.064"-0.104" | Rockwell B40 | MS27183-15 | 50 | 000000000 | 00000 |
| 7/16" | 0.469" | 0.734" | 0.051"-0.080" | Rockwell B40 | MS27183-62 | 50 | 000000000 | 00000 |
| 7/16" | 0.469" | 0.922" | 0.051"-0.080" | Rockwell B40 | MS27183-16; ASME B18.21.1 | 50 | 000000000 | 0000 |
| 7/16" | 0.500" | 1.250" | 0.064"-0.104" | Rockwell B40 | MS27183-17; ASME B18.21.1 | 50 | 000000000 | 00000 |
| 1/2" | 0.531" | 1.062" | 0.074"-0.121" | Rockwell B40 | MS27183-18; ASME B18.21.1 | 25 | 000000000 | 0000 |
| 1/2" | 0.562" | 1.375" | 0.086"-0.132" | Rockwell B40 | MS27183-19; ASME B18.21.1 | 10 | 000000000 | 0000 |
| 9/16" | 0.594" | 1.156" | 0.074"-0.121" | Rockwell B40 | MS27183-20; ASME B18.21.1 | 25 | 000000000 | 00000 |
| 5/8" | 0.656" | 1.312" | 0.074"-0.121" | Rockwell B40 | MS27183-21; ASME B18.21.1 | 25 | 000000000 | 00000 |
| 5/8" | 0.656" | 2.125" | 0.080"-0.115" | Rockwell B40 | MS27183-63 | 5 | 000000000 | 00000 |
| 5/8" | 0.688" | 1.750" | 0.108"-0.160" | Rockwell B40 | MS27183-22; ASME B18.21.1 | 10 | 000000000 | 00000 |
| 3/4" | 0.812" | 1.469" | 0.108"-0.160" | Rockwell B40 | MS27183-23; ASME B18.21.1 | 10 | 000000000 | 00000 |
| 3/4" | 0.812" | 2.000" | 0.122"-0.177" | Rockwell B40 | MS27183-24; ASME B18.21.1 | 5 | 000000000 | 00000 |
| 7/8" | 0.938" | 1.750" | 0.108"-0.160" | Rockwell B40 | MS27183-25; ASME B18.21.1 | 10 | 000000000 | 00000 |
| 7/8" | 0.938" | 2.250" | 0.136"-0.192" | Rockwell B40 | MS27183-26; ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1" | 1.062" | 2.000" | 0.108"-0.160" | Rockwell B40 | MS27183-27; ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1" | 1.062" | 2.500" | 0.136"-0.192" | Rockwell B40 | MS27183-28; ASME B18.21.1 | 1 | 000000000 | 0000 |