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National Stock Number:
5310-01-185-8691
Federal Supply Class:
5310
National Item Identification Number:
011858691
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:
| 5740916 | 34623 | AM GENERAL LLC | | A03-02772 | 33116 | KELSEY-HAYES CO WHEEL DRUM AND BRAKE DIV |
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Techincal Specification:
| MATERIAL | STEEL COMP 1050 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | 51-00386,FSCM 33116 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.505 INCHES MINIMUM AND | | 0.510 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 1.750 INCHES NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.180 INCHES MINIMUM AND | | 0.194 INCHES MAXIMUM | | COLOR | BLACK OVERALL | | HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND | | 45.0 ROCKWELL C MAXIMUM |
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