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National Stock Number:
5310-01-530-3876
Federal Supply Class:
5310
National Item Identification Number:
015303876
Description:
WASHER,FLAT
Detail:
A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use SHIM. For items fabricated from ceramic or electrically rated materials by specification or industry standards use INSULATOR (1), WASHER. Excludes DISK, VALVE, graphite impregnated and lubricated items.
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Manufacturer Information:
| 95-D-361-39 | 71905 | DERBYSHIRE MACHINE & TOOL CO | | M3979 PC. NO. 8 | 0ASY6 | DERBYSHIRE MARINE PRODUCTS, LLC | | M3979 PC. NO. 8 | 71905 | DERBYSHIRE MACHINE & TOOL CO |
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Techincal Specification:
| MATERIAL DOCUMENT AND CLASSIFICATION | AF-DE588 BROWN ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | THRUST WASHER | | SPECIAL FEATURES | MATERIAL IS DELRIN (POLYOXYMETHYLENE) IT IS A RUGGED POLYMER THAT SERVES AS AN EXCELLANTCHOICE FOR LONG -TERM MECHANICAL STABILITY THOUGH IT CANNOT TOLERATE TO BE IN THE PRESENCE OF ACIDIC OR BASIC SOLUITONS FOR LONG PERIODS OF TIME, AS THE POLYMER WILL D |
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