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National Stock Number:
5310-01-215-3025
Federal Supply Class:
5310
National Item Identification Number:
012153025
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:
| 11570754 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | 11570754 | 23364 | CLA-BAR INDUSTRIES |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.137 INCHES MINIMUM AND 0.143 INCHES MAXIMUM | | OVERALL DIAMETER | 0.275 INCHES MINIMUM AND 0.285 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-626,COND 1/2 H FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER ALLOY 360 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-STD-171 MIL STD 1ST TREATMENT RESPONSE AND MIL-P-81728 MIL SPEC 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | COPPER AND TIN OVERALL | | THICKNESS | 0.032 INCHES NOMINAL |
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