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Warning: Products have one, but not necessarily all, of the selected characteristics.
System of Measurement System of Measurement |
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Material Material |
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Finish Finish |
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Tooth Location Tooth Location |
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 | Internal |
Washer Type Washer Type |
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 | Tooth Lock |
Thickness Thickness |
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Hardness Hardness |
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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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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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About Washers
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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.
Bronze washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
410 stainless steel washers have excellent wear resistance.
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 |
Bronze | ||||||||
MS-35333/NASM 35333 | ||||||||
| No. 2 | 0.089" | 0.200" | 0.010"-0.015" | Rockwell B90 | ASME B18.21.1; MS35333-103; NASM35333 | 25 | 000000000 | 0000 |
| No. 4 | 0.115" | 0.270" | 0.015"-0.019" | Rockwell B90 | ASME B18.21.1; MS35333-104; NASM35333 | 25 | 000000000 | 0000 |
| No. 6 | 0.141" | 0.295" | 0.017"-0.021" | Rockwell B90 | ASME B18.21.1; MS35333-105; NASM35333 | 25 | 000000000 | 00000 |
| No. 8 | 0.168" | 0.340" | 0.018"-0.023" | Rockwell B90 | ASME B18.21.1; MS35333-106; NASM35333 | 25 | 000000000 | 00000 |
| No. 10 | 0.195" | 0.381" | 0.020"-0.025" | Rockwell B90 | ASME B18.21.1; MS35333-107; NASM35333 | 25 | 000000000 | 00000 |
| 1/4" | 0.256" | 0.478" | 0.023"-0.028" | Rockwell B90 | ASME B18.21.1; MS35333-108; NASM35333 | 25 | 000000000 | 00000 |
| 5/16" | 0.332" | 0.610" | 0.028"-0.034" | Rockwell B90 | ASME B18.21.1; MS35333-109; NASM35333 | 10 | 000000000 | 0000 |
| 3/8" | 0.384" | 0.692" | 0.032"-0.040" | Rockwell B90 | ASME B18.21.1; MS35333-110; NASM35333 | 10 | 000000000 | 0000 |
| 1/2" | 0.512" | 0.900" | 0.037"-0.045" | Rockwell B90 | ASME B18.21.1; MS35333-113; NASM35333 | 5 | 000000000 | 0000 |
410 Stainless Steel | ||||||||
MS-35333/NASM 35333 | ||||||||
| No. 2 | 0.089" | 0.200" | 0.010"-0.015" | Rockwell C40-50 | ASME B18.21.1; MS35333-69; NASM35333 | 25 | 000000000 | 0000 |
| No. 4 | 0.115" | 0.270" | 0.015"-0.019" | Rockwell C40-50 | ASME B18.21.1; MS35333-70; NASM35333 | 25 | 000000000 | 00000 |
| No. 6 | 0.141" | 0.295" | 0.017"-0.021" | Rockwell C40-50 | ASME B18.21.1; MS35333-71; NASM35333 | 25 | 000000000 | 00000 |
| No. 8 | 0.168" | 0.340" | 0.018"-0.023" | Rockwell C40-50 | ASME B18.21.1; MS35333-72; NASM35333 | 25 | 000000000 | 00000 |
| No. 10 | 0.195" | 0.381" | 0.020"-0.025" | Rockwell C40-50 | ASME B18.21.1; MS35333-73; NASM35333 | 25 | 000000000 | 00000 |
| 1/4" | 0.256" | 0.478" | 0.023"-0.028" | Rockwell C40-50 | ASME B18.21.1; MS35333-74; NASM35333 | 25 | 000000000 | 00000 |
| 5/16" | 0.332" | 0.610" | 0.028"-0.034" | Rockwell C40-50 | ASME B18.21.1; MS35333-75; NASM35333 | 25 | 000000000 | 0000 |
| 3/8" | 0.384" | 0.692" | 0.032"-0.040" | Rockwell C40-50 | ASME B18.21.1; MS35333-76; NASM35333 | 25 | 000000000 | 00000 |
| 7/16" | 0.448" | 0.789" | 0.032"-0.040" | Rockwell C40-50 | ASME B18.21.1; MS35333-77; NASM35333 | 25 | 000000000 | 00000 |
| 1/2" | 0.512" | 0.900" | 0.037"-0.045" | Rockwell C40-50 | ASME B18.21.1; MS35333-78; NASM35333 | 10 | 000000000 | 00000 |
| 5/8" | 0.640" | 1.071" | 0.042"-0.050" | Rockwell C40-50 | ASME B18.21.1; MS35333-80; NASM35333 | 10 | 000000000 | 00000 |
| 3/4" | 0.769" | 1.245" | 0.047"-0.055" | Rockwell C40-50 | ASME B18.21.1; MS35333-81; NASM35333 | 5 | 000000000 | 00000 |
| 7/8" | 0.894" | 1.410" | 0.052"-0.060" | Rockwell C40-50 | ASME B18.21.1; MS35333-82; NASM35333 | 5 | 000000000 | 00000 |