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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" | Not Rated | MS27183-1 | 100 | 000000000 | 00000 |
| No. 2 | 0.094" | 0.250" | 0.016"-0.025" | Not Rated | MS27183-2; ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 3 | 0.125" | 0.250" | 0.017"-0.028" | Not Rated | MS27183-3 | 100 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.312" | 0.025"-0.040" | Not Rated | MS27183-4; ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.375" | 0.025"-0.040" | Not Rated | MS27183-44 | 100 | 000000000 | 0000 |
| No. 5 | 0.141" | 0.281" | 0.025"-0.040" | Not Rated | MS27183-45 | 100 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.250" | 0.013"-0.020" | Not Rated | MS27183-43 | 100 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.312" | 0.027"-0.048" | Not Rated | MS27183-5 | 100 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.375" | 0.036"-0.065" | Not Rated | MS27183-6; ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 8 | 0.188" | 0.375" | 0.036"-0.065" | Not Rated | MS27183-7 | 100 | 000000000 | 0000 |
| No. 8 | 0.188" | 0.438" | 0.036"-0.065" | Not Rated | MS27183-41; ASME B18.21.1 | 100 | 000000000 | 00000 |
| No. 8 | 0.188" | 0.500" | 0.051"-0.080" | Not Rated | MS27183-46 | 100 | 000000000 | 0000 |
| No. 10 | 0.219" | 0.365" | 0.025"-0.040" | Not Rated | MS27183-47 | 100 | 000000000 | 0000 |
| No. 10 | 0.219" | 0.438" | 0.036"-0.065" | Not Rated | MS27183-8 | 100 | 000000000 | 0000 |
| No. 10 | 0.219" | 0.500" | 0.036"-0.065" | Not Rated | MS27183-42; ASME B18.21.1 | 100 | 000000000 | 00000 |
| No. 12 | 0.250" | 0.562" | 0.025"-0.040" | Not Rated | MS27183-49 | 100 | 000000000 | 0000 |
| No. 12 | 0.250" | 0.562" | 0.051"-0.080" | Not Rated | MS27183-9; ASME B18.21.1 | 100 | 000000000 | 00000 |
| No. 12 | 0.250" | 0.625" | 0.025"-0.040" | Not Rated | MS27183-50 | 100 | 000000000 | 00000 |
| No. 12 | 0.250" | 0.938" | 0.051"-0.080" | Not Rated | MS27183-48 | 25 | 000000000 | 0000 |
| No. 12 | 0.250" | 1.000" | 0.051"-0.080" | Not Rated | MS27183-51 | 25 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.625" | 0.051"-0.080" | Not Rated | MS27183-10; ASME B18.21.1 | 100 | 000000000 | 00000 |
| 1/4" | 0.281" | 0.734" | 0.051"-0.080" | Not Rated | MS27183-52 | 100 | 000000000 | 00000 |
| 1/4" | 0.312" | 0.500" | 0.027"-0.048" | Not Rated | MS27183-54 | 50 | 000000000 | 00000 |
| 1/4" | 0.312" | 0.875" | 0.051"-0.075" | Not Rated | MS27183-53 | 25 | 000000000 | 00000 |
| 1/4" | 0.313" | 0.734" | 0.051"-0.080" | Not Rated | MS27183-11; ASME B18.21.1 | 50 | 000000000 | 00000 |
| 5/16" | 0.344" | 0.688" | 0.051"-0.080" | Not Rated | MS27183-12; ASME B18.21.1 | 100 | 000000000 | 00000 |
| 5/16" | 0.375" | 0.625" | 0.027"-0.048" | Not Rated | MS27183-56 | 50 | 000000000 | 0000 |
| 5/16" | 0.375" | 0.734" | 0.064"-0.094" | Not Rated | MS27183-55 | 50 | 000000000 | 00000 |
| 5/16" | 0.375" | 0.875" | 0.064"-0.104" | Not Rated | MS27183-13; ASME B18.21.1 | 50 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.812" | 0.051"-0.080" | Not Rated | MS27183-14; ASME B18.21.1 | 50 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.875" | 0.051"-0.070" | Not Rated | MS27183-57 | 50 | 000000000 | 00000 |
| 3/8" | 0.412" | 0.625" | 0.025"-0.040" | Not Rated | MS27183-58 | 50 | 000000000 | 0000 |
| 3/8" | 0.438" | 0.875" | 0.051"-0.080" | Not Rated | MS27183-60 | 50 | 000000000 | 00000 |
| 3/8" | 0.438" | 1.365" | 0.064"-0.104" | Not Rated | MS27183-59 | 10 | 000000000 | 00000 |
| 3/8" | 0.438" | 1.625" | 0.051"-0.104" | Not Rated | MS27183-61 | 10 | 000000000 | 00000 |
| 7/16" | 0.438" | 1.000" | 0.064"-0.104" | Not Rated | MS27183-15 | 50 | 000000000 | 00000 |
| 7/16" | 0.469" | 0.734" | 0.051"-0.080" | Not Rated | MS27183-62 | 50 | 000000000 | 00000 |
| 7/16" | 0.469" | 0.922" | 0.051"-0.080" | Not Rated | MS27183-16; ASME B18.21.1 | 50 | 000000000 | 00000 |
| 7/16" | 0.500" | 1.250" | 0.064"-0.104" | Not Rated | MS27183-17; ASME B18.21.1 | 50 | 000000000 | 00000 |
| 1/2" | 0.531" | 1.062" | 0.074"-0.121" | Not Rated | MS27183-18; ASME B18.21.1 | 25 | 000000000 | 00000 |
| 1/2" | 0.562" | 1.375" | 0.086"-0.132" | Not Rated | MS27183-19; ASME B18.21.1 | 10 | 000000000 | 0000 |
| 9/16" | 0.594" | 1.156" | 0.074"-0.121" | Not Rated | MS27183-20; ASME B18.21.1 | 25 | 000000000 | 00000 |
| 5/8" | 0.656" | 1.312" | 0.074"-0.121" | Not Rated | MS27183-21; ASME B18.21.1 | 25 | 000000000 | 00000 |
| 5/8" | 0.656" | 2.125" | 0.080"-0.115" | Not Rated | MS27183-63 | 5 | 000000000 | 00000 |
| 5/8" | 0.688" | 1.750" | 0.108"-0.160" | Not Rated | MS27183-22; ASME B18.21.1 | 10 | 000000000 | 00000 |
| 3/4" | 0.812" | 1.469" | 0.108"-0.160" | Not Rated | MS27183-23; ASME B18.21.1 | 10 | 000000000 | 00000 |
| 3/4" | 0.812" | 2.000" | 0.122"-0.177" | Not Rated | MS27183-24; ASME B18.21.1 | 5 | 000000000 | 00000 |
| 7/8" | 0.938" | 1.750" | 0.108"-0.160" | Not Rated | MS27183-25; ASME B18.21.1 | 10 | 000000000 | 00000 |
| 7/8" | 0.938" | 2.250" | 0.136"-0.192" | Not Rated | MS27183-26; ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1" | 1.062" | 2.000" | 0.108"-0.160" | Not Rated | MS27183-27; ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1" | 1.062" | 2.500" | 0.136"-0.192" | Not Rated | MS27183-28; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 1/8" | 1.250" | 2.750" | 0.136"-0.192" | Not Rated | MS27183-29; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 1/4" | 1.375" | 3.000" | 0.136"-0.192" | Not Rated | MS27183-30; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 3/8" | 1.500" | 3.250" | 0.153"-0.213" | Not Rated | MS27183-31; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 1/2" | 1.625" | 3.500" | 0.153"-0.213" | Not Rated | MS27183-32; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 5/8" | 1.750" | 3.750" | 0.153"-0.213" | Not Rated | MS27183-33; ASME B18.21.1 | 1 | 000000000 | 00000 |
| 1 3/4" | 1.875" | 4.000" | 0.153"-0.213" | Not Rated | MS27183-34; ASME B18.21.1 | 1 | 000000000 | 00000 |
| 1 7/8" | 2.000" | 4.250" | 0.153"-0.213" | Not Rated | MS27183-35; ASME B18.21.1 | 1 | 000000000 | 00000 |
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Not Rated | MS27183-36; ASME B18.21.1 | 1 | 000000000 | 00000 |
MS20002 | ||||||||
| 1/4" | 0.260" | 0.531" | 0.052"-0.072" | Rockwell C26 | MS20002-4 | 25 | 000000000 | 00000 |
| 5/16" | 0.324" | 0.593" | 0.052"-0.072" | Rockwell C26 | MS20002-5 | 25 | 000000000 | 00000 |
| 3/8" | 0.385" | 0.687" | 0.052"-0.072" | Rockwell C26 | MS20002-6 | 25 | 000000000 | 00000 |
| 7/16" | 0.451" | 0.781" | 0.052"-0.072" | Rockwell C26 | MS20002-7 | 25 | 000000000 | 00000 |
| 1/2" | 0.515" | 0.875" | 0.052"-0.072" | Rockwell C26 | MS20002-8 | 25 | 000000000 | 00000 |
| 9/16" | 0.579" | 0.968" | 0.052"-0.072" | Rockwell C26 | MS20002-9 | 25 | 000000000 | 00000 |
| 5/8" | 0.643" | 1.062" | 0.052"-0.072" | Rockwell C26 | MS20002-10 | 10 | 000000000 | 00000 |
| 3/4" | 0.770" | 1.250" | 0.052"-0.072" | Rockwell C26 | MS20002-12 | 10 | 000000000 | 00000 |
| 7/8" | 0.897" | 1.437" | 0.052"-0.072" | Rockwell C26 | MS20002-14 | 10 | 000000000 | 00000 |
| 1" | 1.025" | 1.625" | 0.052"-0.072" | Rockwell C26 | MS20002-16 | 5 | 000000000 | 00000 |
NAS1149 | ||||||||
| No. 2 | 0.099" | 0.250" | 0.029"-0.035" | Not Rated | NAS1149-FN232P; AN960-2 | 100 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.312" | 0.014"-0.018" | Not Rated | NAS1149-FN416P; AN960-4L | 100 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.312" | 0.029"-0.035" | Not Rated | NAS1149-FN432P; AN960-4; ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 6 | 0.149" | 0.375" | 0.014"-0.018" | Not Rated | NAS1149-FN616P; AN960-6L | 100 | 000000000 | 0000 |
| No. 6 | 0.149" | 0.375" | 0.029"-0.035" | Not Rated | NAS1149-FN632P; AN960-6 | 100 | 000000000 | 0000 |
| No. 8 | 0.174" | 0.375" | 0.014"-0.018" | Not Rated | NAS1149-FN816P; AN960-8L | 100 | 000000000 | 0000 |
| No. 8 | 0.174" | 0.375" | 0.029"-0.035" | Not Rated | NAS1149-FN832P; AN960-8 | 100 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.438" | 0.029"-0.035" | Not Rated | NAS1149-F0332P; AN960-10L | 100 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.438" | 0.059"-0.067" | Not Rated | NAS1149-F0363P; AN960-10 | 100 | 000000000 | 0000 |
| 1/4" | 0.265" | 0.500" | 0.029"-0.035" | Not Rated | NAS1149-F0432P; AN960-416L | 100 | 000000000 | 0000 |
| 1/4" | 0.265" | 0.500" | 0.059"-0.067" | Not Rated | NAS1149-F0463P; AN960-416 | 100 | 000000000 | 0000 |
| 5/16" | 0.328" | 0.562" | 0.029"-0.035" | Not Rated | NAS1149-F0532P; AN960-516L | 100 | 000000000 | 0000 |
| 5/16" | 0.328" | 0.562" | 0.059"-0.067" | Not Rated | NAS1149-F0563P; AN960-516 | 100 | 000000000 | 0000 |
| 3/8" | 0.390" | 0.625" | 0.029"-0.035" | Not Rated | NAS1149-F0632P; AN960-616L | 100 | 000000000 | 0000 |
| 3/8" | 0.390" | 0.625" | 0.059"-0.067" | Not Rated | NAS1149-F0663P; AN960-616 | 100 | 000000000 | 00000 |
| 7/16" | 0.453" | 0.750" | 0.029"-0.035" | Not Rated | NAS1149-F0732P; AN960-716L | 100 | 000000000 | 00000 |
| 7/16" | 0.453" | 0.750" | 0.059"-0.067" | Not Rated | NAS1149-F0763P; AN960-716 | 100 | 000000000 | 00000 |
| 1/2" | 0.515" | 0.875" | 0.029"-0.035" | Not Rated | NAS1149-F0832P; AN960-816L | 100 | 000000000 | 00000 |
| 1/2" | 0.515" | 0.875" | 0.059"-0.067" | Not Rated | NAS1149-F0863P; AN960-816 | 100 | 000000000 | 00000 |
| 9/16" | 0.578" | 1.062" | 0.059"-0.067" | Not Rated | NAS1149-F0963P; AN960-916 | 50 | 000000000 | 00000 |
| 5/8" | 0.640" | 1.188" | 0.029"-0.035" | Not Rated | NAS1149-F1032P; AN960-1016L | 50 | 000000000 | 0000 |
| 5/8" | 0.640" | 1.188" | 0.059"-0.067" | Not Rated | NAS1149-F1063P; AN960-1016 | 50 | 000000000 | 00000 |
| 3/4" | 0.765" | 1.312" | 0.028"-0.036" | Not Rated | NAS1149-F1232P; AN960-1216L | 50 | 000000000 | 00000 |
| 3/4" | 0.765" | 1.312" | 0.086"-0.094" | Not Rated | NAS1149-F1290P; AN960-1216L | 10 | 000000000 | 00000 |
| 7/8" | 0.890" | 1.500" | 0.028"-0.036" | Not Rated | NAS1149-F1432P; AN960-1416L | 25 | 000000000 | 00000 |
| 7/8" | 0.890" | 1.500" | 0.059"-0.067" | Not Rated | NAS1149-F1463P | 10 | 000000000 | 00000 |
| 7/8" | 0.890" | 1.500" | 0.086"-0.094" | Not Rated | NAS1149-F1490P; AN960-1416 | 10 | 000000000 | 00000 |
| 1" | 1.015" | 1.750" | 0.028"-0.036" | Not Rated | NAS1149-F1632P; AN960-1616L | 10 | 000000000 | 00000 |
| 1" | 1.015" | 1.750" | 0.086"-0.094" | Not Rated | NAS1149-F1690P; AN960-1616 | 10 | 000000000 | 00000 |
NAS620 | ||||||||
| No. 0 | 0.063" | 0.099" | 0.015"-0.017" | Rockwell B70 | NAS620-0 | 100 | 00000000 | 00000 |
| No. 2 | 0.089" | 0.149" | 0.015"-0.017" | Rockwell B70 | NAS620-2 | 100 | 00000000 | 0000 |
| No. 3 | 0.102" | 0.180" | 0.015"-0.017" | Rockwell B70 | NAS620-3L | 25 | 00000000 | 0000 |
| No. 3 | 0.102" | 0.180" | 0.031"-0.033" | Rockwell B70 | NAS620-3 | 25 | 00000000 | 00000 |
| No. 4 | 0.115" | 0.209" | 0.015"-0.017" | Rockwell B70 | NAS620-4L | 100 | 00000000 | 00000 |
| No. 4 | 0.115" | 0.209" | 0.031"-0.033" | Rockwell B70 | NAS620-4 | 100 | 00000000 | 00000 |
| No. 5 | 0.128" | 0.238" | 0.015"-0.017" | Rockwell B70 | NAS620-5L | 100 | 00000000 | 0000 |
| No. 5 | 0.128" | 0.238" | 0.031"-0.033" | Rockwell B70 | NAS620-5 | 250 | 00000000 | 00000 |
| No. 6 | 0.143" | 0.267" | 0.015"-0.017" | Rockwell B70 | NAS620-6L | 100 | 00000000 | 0000 |
| No. 6 | 0.143" | 0.267" | 0.031"-0.033" | Rockwell B70 | NAS620-6 | 100 | 00000000 | 00000 |
| No. 8 | 0.169" | 0.304" | 0.015"-0.017" | Rockwell B70 | NAS620-8L | 250 | 00000000 | 00000 |
| No. 8 | 0.169" | 0.304" | 0.031"-0.033" | Rockwell B70 | NAS620-8 | 100 | 00000000 | 00000 |
| No. 10 | 0.195" | 0.354" | 0.031"-0.033" | Rockwell B70 | NAS620-10L | 100 | 00000000 | 0000 |
| No. 10 | 0.195" | 0.354" | 0.062"-0.064" | Rockwell B70 | NAS620-10 | 100 | 00000000 | 0000 |
| 1/4" | 0.255" | 0.468" | 0.031"-0.033" | Rockwell B70 | NAS620-416L | 100 | 00000000 | 00000 |
| 1/4" | 0.255" | 0.468" | 0.062"-0.064" | Rockwell B70 | NAS620-416 | 100 | 00000000 | 00000 |
AN970/NASM970 | ||||||||
| No. 10 | 0.203" | 0.875" | 0.053"-0.073" | Rockwell B40 | AN970-3; NASM970 | 100 | 000000000 | 00000 |
| 1/4" | 0.265" | 1.125" | 0.053"-0.073" | Rockwell B40 | AN970-4; NASM970 | 50 | 000000000 | 00000 |
| 5/16" | 0.328" | 1.375" | 0.053"-0.073" | Rockwell B40 | AN970-5; NASM970 | 50 | 000000000 | 00000 |
| 3/8" | 0.390" | 1.625" | 0.053"-0.073" | Rockwell B40 | AN970-6; NASM970 | 25 | 000000000 | 00000 |
| 7/16" | 0.453" | 1.812" | 0.099"-0.119" | Rockwell B40 | AN970-7; NASM970 | 10 | 000000000 | 00000 |
| 1/2" | 0.515" | 2.000" | 0.099"-0.119" | Rockwell B40 | AN970-8; NASM970 | 10 | 000000000 | 00000 |
| 9/16" | 0.578" | 2.188" | 0.115"-0.135" | Rockwell B40 | AN970-9; NASM970 | 5 | 000000000 | 0000 |
| 5/8" | 0.640" | 2.375" | 0.115"-0.135" | Rockwell B40 | AN970-10; NASM970 | 5 | 000000000 | 00000 |
Mil. Spec. Split Lock Washers
Choose these washers for their adherence to strict military standards for material and construction. As a screw is tightened, they flatten to add tension to the joint and prevent loosening from small amounts of vibration.
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 | ||||||||
|---|---|---|---|---|---|---|---|---|
MS35338 | ||||||||
| No. 2 | 0.088" | 0.172" | 0.020" | Rockwell C38 | ASME B18.21.1; MS35338-39 | 50 | 000000000 | 00000 |
| No. 4 | 0.114" | 0.209" | 0.025" | Rockwell C38 | ASME B18.21.1; MS35338-40 | 50 | 000000000 | 0000 |
| No. 6 | 0.141" | 0.250" | 0.031" | Rockwell C38 | ASME B18.21.1; MS35338-41 | 50 | 000000000 | 0000 |
| No. 8 | 0.167" | 0.293" | 0.040" | Rockwell C38 | ASME B18.21.1; MS35338-42 | 50 | 000000000 | 0000 |
| No. 10 | 0.193" | 0.334" | 0.047" | Rockwell C38 | ASME B18.21.1; MS35338-43 | 50 | 000000000 | 0000 |
| 1/4" | 0.252" | 0.487" | 0.062" | Rockwell C38 | ASME B18.21.1; MS35338-44 | 50 | 000000000 | 0000 |
| 5/16" | 0.314" | 0.583" | 0.078" | Rockwell C38 | ASME B18.21.1; MS35338-45 | 50 | 000000000 | 0000 |
| 3/8" | 0.377" | 0.680" | 0.094" | Rockwell C38 | ASME B18.21.1; MS35338-46 | 25 | 000000000 | 0000 |
| 7/16" | 0.440" | 0.776" | 0.109" | Rockwell C38 | ASME B18.21.1; MS35338-47 | 25 | 000000000 | 0000 |
| 1/2" | 0.502" | 0.869" | 0.125" | Rockwell C38 | ASME B18.21.1; MS35338-48 | 10 | 000000000 | 0000 |
| 9/16" | 0.564" | 0.965" | 0.141" | Rockwell C38 | ASME B18.21.1; MS35338-49 | 5 | 000000000 | 0000 |
| 5/8" | 0.628" | 1.073" | 0.156" | Rockwell C38 | ASME B18.21.1; MS35338-50 | 2 | 000000000 | 0000 |
Mil. Spec. Internal-Tooth Lock Washers
Choose these washers for their adherence to strict military standards for material and construction. Internal teeth dig into the screw head while the smooth outside edge won't snag objects. These washers provide greater vibration resistance than split lock washers. Use with fasteners that have small heads, such as fillister and cheese head screws.
Cadmium-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 | ||||||||
|---|---|---|---|---|---|---|---|---|
MS-35333/NASM 35333 | ||||||||
| No. 2 | 0.089" | 0.200" | 0.010"-0.015" | Rockwell C40-50 | ASME B18.21.1; MS35333-35; NASM35333 | 25 | 000000000 | 00000 |
| No. 4 | 0.115" | 0.270" | 0.015"-0.019" | Rockwell C40-50 | ASME B18.21.1; MS35333-36; NASM35333 | 25 | 000000000 | 0000 |
| No. 6 | 0.141" | 0.295" | 0.017"-0.021" | Rockwell C40-50 | ASME B18.21.1; MS35333-37; NASM35333 | 25 | 000000000 | 0000 |
| No. 8 | 0.168" | 0.340" | 0.018"-0.023" | Rockwell C40-50 | ASME B18.21.1; MS35333-38; NASM35333 | 25 | 000000000 | 0000 |
| No. 10 | 0.195" | 0.381" | 0.020"-0.025" | Rockwell C40-50 | ASME B18.21.1; MS35333-39; NASM35333 | 25 | 000000000 | 0000 |
| 1/4" | 0.256" | 0.478" | 0.023"-0.028" | Rockwell C40-50 | ASME B18.21.1; MS35333-40; NASM35333 | 25 | 000000000 | 0000 |
| 5/16" | 0.332" | 0.610" | 0.028"-0.034" | Rockwell C40-50 | ASME B18.21.1; MS35333-41; NASM35333 | 25 | 000000000 | 0000 |
| 3/8" | 0.384" | 0.692" | 0.032"-0.040" | Rockwell C40-50 | ASME B18.21.1; MS35333-42; NASM35333 | 25 | 000000000 | 00000 |
| 7/16" | 0.448" | 0.789" | 0.032"-0.040" | Rockwell C40-50 | ASME B18.21.1; MS35333-43; NASM35333 | 25 | 000000000 | 00000 |
| 1/2" | 0.512" | 0.900" | 0.037"-0.045" | Rockwell C40-50 | ASME B18.21.1; MS35333-44; NASM35333 | 25 | 000000000 | 00000 |
| 5/8" | 0.640" | 1.071" | 0.042"-0.050" | Rockwell C40-50 | ASME B18.21.1; MS35333-46; NASM35333 | 10 | 000000000 | 0000 |
| 3/4" | 0.769" | 1.245" | 0.047"-0.055" | Rockwell C40-50 | ASME B18.21.1; MS35333-47; NASM35333 | 10 | 000000000 | 0000 |
| 7/8" | 0.894" | 1.410" | 0.052"-0.060" | Rockwell C40-50 | ASME B18.21.1; MS35333-48; NASM35333 | 10 | 000000000 | 00000 |
| 1" | 1.019" | 1.637" | 0.059"-0.067" | Rockwell C40-50 | ASME B18.21.1; MS35333-49; NASM35333 | 5 | 000000000 | 0000 |
| 1 1/4" | 1.260" | 1.950" | 0.059"-0.067" | Rockwell C40-50 | ASME B18.21.1; MS35333-51; NASM35333 | 5 | 000000000 | 0000 |
Mil. Spec. External Retaining Rings
These rings meet military specification MS16624. Open them with retaining ring pliers (sold separately), pass them over the end of a shaft, and release to spring into the groove. Ring ID is measured with the ring uninstalled.
1060-1090 spring steel rings are an economical choice with good strength. The cadmium-plated finish adds some corrosion resistance.
Thrust load capacity, also known as PR, is based on using a shaft that is harder than the ring.
For technical drawings and 3-D models, click on a part number.
For Groove | Ring | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For OD | Dia. | Wd. | ID | Thick. | Min. Hardness | Thrust Load Capacity, lbs. | Magnetic Properties | Specifications Met | Pkg. Qty. | Pkg. | |
Cadmium-Plated 1060-1090 Spring Steel | |||||||||||
| 1/4" | 0.23" | 0.03" | 0.225" | 0.025" | Rockwell C48 | 590 | Magnetic | MS16624 | 25 | 000000000 | 00000 |
| 5/16" | 0.29" | 0.03" | 0.281" | 0.025" | Rockwell C48 | 750 | Magnetic | MS16624 | 25 | 000000000 | 0000 |
| 3/8" | 0.352" | 0.03" | 0.338" | 0.025" | Rockwell C48 | 880 | Magnetic | MS16624 | 25 | 000000000 | 0000 |
| 7/16" | 0.412" | 0.03" | 0.395" | 0.025" | Rockwell C48 | 1,030 | Magnetic | MS16624 | 25 | 000000000 | 0000 |
| 1/2" | 0.468" | 0.04" | 0.461" | 0.035" | Rockwell C48 | 1,670 | Magnetic | MS16624 | 25 | 000000000 | 0000 |
| 9/16" | 0.53" | 0.04" | 0.521" | 0.035" | Rockwell C48 | 1,870 | Magnetic | MS16624 | 25 | 000000000 | 0000 |
| 5/8" | 0.588" | 0.04" | 0.579" | 0.035" | Rockwell C48 | 2,090 | Magnetic | MS16624 | 25 | 000000000 | 0000 |
| 11/16" | 0.646" | 0.047" | 0.635" | 0.042" | Rockwell C48 | 3,450 | Magnetic | MS16624 | 25 | 000000000 | 00000 |
| 3/4" | 0.704" | 0.047" | 0.693" | 0.042" | Rockwell C48 | 3,750 | Magnetic | MS16624 | 25 | 000000000 | 00000 |
| 13/16" | 0.762" | 0.047" | 0.751" | 0.042" | Rockwell C48 | 4,060 | Magnetic | MS16624 | 10 | 000000000 | 0000 |
| 7/8" | 0.821" | 0.047" | 0.81" | 0.042" | Rockwell C48 | 4,360 | Magnetic | MS16624 | 10 | 000000000 | 0000 |
| 15/16" | 0.882" | 0.047" | 0.867" | 0.042" | Rockwell C48 | 4,720 | Magnetic | MS16624 | 10 | 000000000 | 0000 |
| 1" | 0.94" | 0.047" | 0.925" | 0.042" | Rockwell C48 | 5,020 | Magnetic | MS16624 | 10 | 000000000 | 0000 |
| 1 1/8" | 1.059" | 0.056" | 1.041" | 0.05" | Rockwell C48 | 6,690 | Magnetic | MS16624 | 1 | 000000000 | 0000 |
| 1 1/4" | 1.176" | 0.056" | 1.156" | 0.05" | Rockwell C48 | 7,460 | Magnetic | MS16624 | 1 | 000000000 | 0000 |
| 1 3/8" | 1.291" | 0.056" | 1.272" | 0.05" | Rockwell C48 | 8,220 | Magnetic | MS16624 | 1 | 000000000 | 0000 |
| 1 1/2" | 1.406" | 0.056" | 1.387" | 0.05" | Rockwell C48 | 8,930 | Magnetic | MS16624 | 1 | 000000000 | 0000 |
| 1 5/8" | 1.529" | 0.068" | 1.503" | 0.062" | Rockwell C46 | 12,000 | Magnetic | MS16624 | 1 | 000000000 | 0000 |
| 1 3/4" | 1.65" | 0.068" | 1.618" | 0.062" | Rockwell C46 | 12,900 | Magnetic | MS16624 | 1 | 000000000 | 0000 |