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National Stock Number:
5310-00-591-7285
Federal Supply Class:
5310
National Item Identification Number:
005917285
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:
| CE78582 | 98230 | NATIONAL SECURITY AGENCY |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND W/FLATS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 94.0 ROCKWELL B NOMINAL | | HOLE DIAMETER | 0.781 INCHES NOMINAL | | HOLE WIDTH ACROSS FLATS | 0.640 INCHES NOMINAL | | OVERALL DIAMETER | 1.125 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-766 COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 302 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-STD-171 MIL STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THICKNESS | 0.032 INCHES NOMINAL |
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