Clear All
System of Measurement System of Measurement |
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For Screw Size For Screw Size |
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OD OD |
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ID ID |
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Washer Type Washer Type |
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| Flat | Split Lock |
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| Tooth Lock |
Finish Finish | Show |
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Finish Finish | Hide |
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Thickness Thickness |
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Specifications Met Specifications Met |
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Hardness Hardness |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Tooth Location Tooth Location |
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 | Internal |
For OD For OD |
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Retaining Ring Style Retaining Ring Style |
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 | Standard |
RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Retaining Ring Type Retaining Ring Type |
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 | External |
For Groove Diameter For Groove Diameter |
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Ring ID Ring ID |
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Thrust Load Capacity Thrust Load Capacity |
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Magnetic Properties Magnetic Properties |
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About Washers
More
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.
Copper and brass washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive. Because of the finish, cadmium-plated copper washers resist corrosion better than copper washers with no finish.
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 | 00000 |
| 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 | 00000 |
| 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 | 00000 |
| 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 |
| 1 1/8" | 1.250" | 2.750" | 0.136"-0.192" | Rockwell B40 | MS27183-29; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 1/4" | 1.375" | 3.000" | 0.136"-0.192" | Rockwell B40 | MS27183-30; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 3/8" | 1.500" | 3.250" | 0.153"-0.213" | Rockwell B40 | MS27183-31; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 1/2" | 1.625" | 3.500" | 0.153"-0.213" | Rockwell B40 | MS27183-32; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 5/8" | 1.750" | 3.750" | 0.153"-0.213" | Rockwell B40 | MS27183-33; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 3/4" | 1.875" | 4.000" | 0.153"-0.213" | Rockwell B40 | MS27183-34; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 7/8" | 2.000" | 4.250" | 0.153"-0.213" | Rockwell B40 | MS27183-35; ASME B18.21.1 | 1 | 000000000 | 00000 |
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Rockwell B40 | 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 | 0000 |
| 5/16" | 0.324" | 0.593" | 0.052"-0.072" | Rockwell C26 | MS20002-5 | 25 | 000000000 | 0000 |
| 3/8" | 0.385" | 0.687" | 0.052"-0.072" | Rockwell C26 | MS20002-6 | 25 | 000000000 | 0000 |
| 7/16" | 0.451" | 0.781" | 0.052"-0.072" | Rockwell C26 | MS20002-7 | 25 | 000000000 | 0000 |
| 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 | 100 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.312" | 0.014"-0.018" | Not Rated | NAS1149-FN416P | 100 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.312" | 0.029"-0.035" | Not Rated | NAS1149-FN432P; ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 6 | 0.149" | 0.375" | 0.014"-0.018" | Not Rated | NAS1149-FN616P | 100 | 000000000 | 0000 |
| No. 6 | 0.149" | 0.375" | 0.029"-0.035" | Not Rated | NAS1149-FN632P | 100 | 000000000 | 0000 |
| No. 8 | 0.174" | 0.375" | 0.014"-0.018" | Not Rated | NAS1149-FN816P | 100 | 000000000 | 0000 |
| No. 8 | 0.174" | 0.375" | 0.029"-0.035" | Not Rated | NAS1149-FN832P | 100 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.438" | 0.029"-0.035" | Not Rated | NAS1149-F0332P | 100 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.438" | 0.059"-0.067" | Not Rated | NAS1149-F0363P | 100 | 000000000 | 0000 |
| 1/4" | 0.265" | 0.500" | 0.029"-0.035" | Not Rated | NAS1149-F0432P | 100 | 000000000 | 0000 |
| 1/4" | 0.265" | 0.500" | 0.059"-0.067" | Not Rated | NAS1149-F0463P | 100 | 000000000 | 0000 |
| 5/16" | 0.328" | 0.562" | 0.029"-0.035" | Not Rated | NAS1149-F0532P | 100 | 000000000 | 0000 |
| 5/16" | 0.328" | 0.562" | 0.059"-0.067" | Not Rated | NAS1149-F0563P | 100 | 000000000 | 0000 |
| 3/8" | 0.390" | 0.625" | 0.029"-0.035" | Not Rated | NAS1149-F0632P | 100 | 000000000 | 0000 |
| 3/8" | 0.390" | 0.625" | 0.059"-0.067" | Not Rated | NAS1149-F0663P | 100 | 000000000 | 0000 |
| 7/16" | 0.453" | 0.750" | 0.029"-0.035" | Not Rated | NAS1149-F0732P | 100 | 000000000 | 0000 |
| 7/16" | 0.453" | 0.750" | 0.059"-0.067" | Not Rated | NAS1149-F0763P | 100 | 000000000 | 00000 |
| 1/2" | 0.515" | 0.875" | 0.029"-0.035" | Not Rated | NAS1149-F0832P | 100 | 000000000 | 0000 |
| 1/2" | 0.515" | 0.875" | 0.059"-0.067" | Not Rated | NAS1149-F0863P | 100 | 000000000 | 00000 |
| 9/16" | 0.578" | 1.062" | 0.059"-0.067" | Not Rated | NAS1149-F0963P | 50 | 000000000 | 00000 |
| 5/8" | 0.640" | 1.188" | 0.029"-0.035" | Not Rated | NAS1149-F1032P | 50 | 000000000 | 0000 |
| 5/8" | 0.640" | 1.188" | 0.059"-0.067" | Not Rated | NAS1149-F1063P | 50 | 000000000 | 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 | 0000 |
| 7/16" | 0.453" | 1.812" | 0.099"-0.119" | Rockwell B40 | AN970-7; NASM970 | 10 | 000000000 | 0000 |
| 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 | 0000 |
Cadmium-Plated Copper | ||||||||
AN901 | ||||||||
| 7/16" | 0.443" | 0.683" | 0.048"-0.054" | Not Rated | AN901-4C | 10 | 000000000 | 0000 |
| 1/2" | 0.505" | 0.745" | 0.048"-0.054" | Not Rated | AN901-5C | 10 | 000000000 | 0000 |
| 9/16" | 0.568" | 0.808" | 0.048"-0.054" | Not Rated | AN901-6C | 10 | 000000000 | 00000 |
| 3/4" | 0.755" | 0.995" | 0.048"-0.054" | Not Rated | AN901-8C | 10 | 000000000 | 00000 |
| 7/8" | 0.880" | 1.120" | 0.048"-0.054" | Not Rated | AN901-10C | 5 | 000000000 | 00000 |
| 1" | 1.068" | 1.370" | 0.048"-0.054" | Not Rated | AN901-12C | 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 | 0.094" | 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" | 1.583" | 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 |