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National Stock Number:
5310-00-168-2890
Federal Supply Class:
5310
National Item Identification Number:
001682890
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:
| 560759 | 73030 | HAMILTON SUNDSTRAND CORPORATION |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 72.5 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 76.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM | | HEAT TREATMENT | AS FABRICATED | | HOLE DIAMETER | 0.318 INCHES NOMINAL | | OVERALL DIAMETER | 1.080 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | -1L-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | 0.125 IN. RADIUS ON OUTER EDGE OF BOTH BEARING SURFACES | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THICKNESS | 0.088 INCHES MINIMUM AND 0.100 INCHES MAXIMUM |
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