Specifications Met Specifications Met |
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System of Measurement System of Measurement |
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Thickness Thickness |
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Material Material |
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Washer Type Washer Type |
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![]() | Flat |
Color Color |
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![]() | White |
Maximum Temperature Maximum Temperature |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Minimum Temperature Minimum Temperature |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Hardness Hardness |
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About Washers
More
Mil. Spec. Plastic Washers

Choose these washers for their adherence to strict military standards for material and construction. They have a good mix of strength and electrical insulating properties. Exposure to moisture may cause them to expand.
For technical drawings and 3-D models, click on a part number.
Temperature Range, °F | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
For Screw Size | ID | OD | Thick. | Min. | Max. | Specifications Met | Color | Pkg. Qty. | Pkg. | |
Nylon Plastic | ||||||||||
NAS1515 | ||||||||||
No. 2 | 0.105" | 0.250" | 0.021"-0.041" | -40° | 180° | NAS1515-H02L | White | 100 | 000000000 | 000000 |
No. 2 | 0.105" | 0.250" | 0.053"-0.073" | -40° | 180° | NAS1515-H02 | White | 100 | 000000000 | 00000 |
No. 4 | 0.125" | 0.312" | 0.021"-0.041" | -40° | 180° | NAS1515-H04L | White | 100 | 000000000 | 00000 |
No. 4 | 0.125" | 0.312" | 0.053"-0.073" | -40° | 180° | NAS1515-H04 | White | 100 | 000000000 | 00000 |
No. 6 | 0.149" | 0.375" | 0.021"-0.041" | -40° | 180° | NAS1515-H06L | White | 50 | 000000000 | 0000 |
No. 6 | 0.149" | 0.375" | 0.053"-0.073" | -40° | 180° | NAS1515-H06 | White | 50 | 000000000 | 00000 |
No. 8 | 0.174" | 0.375" | 0.021"-0.041" | -40° | 180° | NAS1515-H08L | White | 50 | 000000000 | 0000 |
No. 8 | 0.174" | 0.375" | 0.053"-0.073" | -40° | 180° | NAS1515-H08 | White | 50 | 000000000 | 0000 |
No. 10 | 0.203" | 0.438" | 0.021"-0.041" | -40° | 180° | NAS1515-H3L | White | 50 | 000000000 | 0000 |
No. 10 | 0.203" | 0.438" | 0.053"-0.073" | -40° | 180° | NAS1515-H3 | White | 50 | 000000000 | 00000 |
No. 10 | 0.203" | 0.438" | 0.084"-0.104" | -40° | 180° | NAS1515-H3H | White | 50 | 000000000 | 00000 |
1/4" | 0.265" | 0.500" | 0.021"-0.041" | -40° | 180° | NAS1515-H4L | White | 50 | 000000000 | 00000 |
1/4" | 0.265" | 0.500" | 0.053"-0.073" | -40° | 180° | NAS1515-H4 | White | 50 | 000000000 | 00000 |
1/4" | 0.265" | 0.500" | 0.084"-0.104" | -40° | 180° | NAS1515-H4H | White | 50 | 000000000 | 00000 |
5/16" | 0.328" | 0.562" | 0.021"-0.041" | -40° | 180° | NAS1515-H5L | White | 50 | 000000000 | 0000 |
5/16" | 0.328" | 0.562" | 0.053"-0.073" | -40° | 180° | NAS1515-H5 | White | 50 | 000000000 | 00000 |
5/16" | 0.328" | 0.562" | 0.084"-0.104" | -40° | 180° | NAS1515-H5H | White | 50 | 000000000 | 00000 |
3/8" | 0.390" | 0.625" | 0.021"-0.041" | -40° | 180° | NAS1515-H6L | White | 50 | 000000000 | 00000 |
3/8" | 0.390" | 0.625" | 0.053"-0.073" | -40° | 180° | NAS1515-H6 | White | 50 | 000000000 | 00000 |
3/8" | 0.390" | 0.625" | 0.084"-0.104" | -40° | 180° | NAS1515-H6H | White | 50 | 000000000 | 00000 |
7/16" | 0.453" | 0.750" | 0.021"-0.041" | -40° | 180° | NAS1515-H7L | White | 50 | 000000000 | 00000 |
7/16" | 0.453" | 0.750" | 0.053"-0.073" | -40° | 180° | NAS1515-H7 | White | 50 | 000000000 | 00000 |
7/16" | 0.453" | 0.750" | 0.084"-0.104" | -40° | 180° | NAS1515-H7H | White | 50 | 000000000 | 00000 |
1/2" | 0.515" | 0.875" | 0.021"-0.041" | -40° | 180° | NAS1515-H8L | White | 50 | 000000000 | 00000 |
1/2" | 0.515" | 0.875" | 0.053"-0.073" | -40° | 180° | NAS1515-H8 | White | 50 | 000000000 | 00000 |
1/2" | 0.515" | 0.875" | 0.084"-0.104" | -40° | 180° | NAS1515-H8H | White | 50 | 000000000 | 00000 |
9/16" | 0.578" | 1.062" | 0.021"-0.041" | -40° | 180° | NAS1515-H9L | White | 25 | 000000000 | 0000 |
9/16" | 0.578" | 1.062" | 0.053"-0.073" | -40° | 180° | NAS1515-H9 | White | 25 | 000000000 | 0000 |
9/16" | 0.578" | 1.062" | 0.084"-0.104" | -40° | 180° | NAS1515-H9H | White | 25 | 000000000 | 00000 |
5/8" | 0.640" | 1.188" | 0.021"-0.041" | -40° | 180° | NAS1515-H10L | White | 25 | 000000000 | 00000 |
5/8" | 0.640" | 1.188" | 0.053"-0.073" | -40° | 180° | NAS1515-H10 | White | 25 | 000000000 | 00000 |
5/8" | 0.640" | 1.188" | 0.084"-0.104" | -40° | 180° | NAS1515-H10H | White | 10 | 000000000 | 0000 |
3/4" | 0.765" | 1.312" | 0.021"-0.041" | -40° | 180° | NAS1515-H12L | White | 25 | 000000000 | 00000 |
3/4" | 0.765" | 1.312" | 0.053"-0.073" | -40° | 180° | NAS1515-H12 | White | 25 | 000000000 | 00000 |
3/4" | 0.765" | 1.312" | 0.084"-0.104" | -40° | 180° | NAS1515-H12H | White | 10 | 000000000 | 0000 |
7/8" | 0.890" | 1.500" | 0.021"-0.041" | -40° | 180° | NAS1515-H14L | White | 10 | 000000000 | 0000 |
7/8" | 0.890" | 1.500" | 0.053"-0.073" | -40° | 180° | NAS1515-H14 | White | 10 | 000000000 | 0000 |
7/8" | 0.890" | 1.500" | 0.084"-0.104" | -40° | 180° | NAS1515-H14H | White | 10 | 000000000 | 0000 |
1" | 1.015" | 1.750" | 0.021"-0.041" | -40° | 180° | NAS1515-H16L | White | 10 | 000000000 | 0000 |
1" | 1.015" | 1.750" | 0.053"-0.073" | -40° | 180° | NAS1515-H16 | White | 10 | 000000000 | 0000 |
1" | 1.015" | 1.750" | 0.084"-0.104" | -40° | 180° | NAS1515-H16H | White | 10 | 000000000 | 00000 |
Mil. Spec. Chemical-Resistant Plastic Washers

Choose these washers for their adherence to strict military standards for material and construction. They surpass most other plastic washers when it comes to withstanding chemicals, oil, and grease. Made from PTFE, these washers withstand high temperatures and have a slippery surface that resists wear in high-friction applications. They are excellent electrical insulators.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID | OD | Thick. | Max. Temperature, °F | Specifications Met | Color | Pkg. Qty. | Pkg. | |
PTFE Plastic | |||||||||
---|---|---|---|---|---|---|---|---|---|
NAS1515 | |||||||||
1/4" | 0.265" | 0.500" | 0.057"-0.075" | 500° | NAS1515-M4 | White | 5 | 000000000 | 00000 |
5/16" | 0.328" | 0.562" | 0.057"-0.075" | 500° | NAS1515-M5 | White | 5 | 000000000 | 0000 |
3/8" | 0.390" | 0.625" | 0.057"-0.075" | 500° | NAS1515-M6 | White | 5 | 000000000 | 00000 |
7/16" | 0.453" | 0.750" | 0.057"-0.075" | 500° | NAS1515-M7 | White | 5 | 000000000 | 00000 |
1/2" | 0.515" | 0.875" | 0.057"-0.075" | 500° | NAS1515-M8 | White | 5 | 000000000 | 00000 |
9/16" | 0.578" | 1.062" | 0.057"-0.075" | 500° | NAS1515-M9 | White | 5 | 000000000 | 00000 |
5/8" | 0.640" | 1.188" | 0.057"-0.075" | 500° | NAS1515-M10 | White | 5 | 000000000 | 00000 |
3/4" | 0.765" | 1.312" | 0.057"-0.075" | 500° | NAS1515-M12 | White | 5 | 000000000 | 00000 |
7/8" | 0.890" | 1.500" | 0.057"-0.075" | 500° | NAS1515-M14 | White | 5 | 000000000 | 00000 |
1" | 1.015" | 1.750" | 0.057"-0.075" | 500° | NAS1515-M16 | White | 5 | 000000000 | 00000 |