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National Stock Number: 5310-01-071-2082
Federal Supply Class: 5310
National Item Identification Number: 010712082
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:
SM-B-652267 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR | SS4409-084 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
CENTER HOLE SHAPE STYLE | ROUND | COLOR | GREEN OVERALL | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | HOLE DIAMETER | 0.252 INCHES MINIMUM AND 0.256 INCHES MAXIMUM | OVERALL DIAMETER | 0.620 INCHES NOMINAL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-250/8,TEMPER H34 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | MATERIAL | ALUMINUM ALLOY 5052 OVERALL | PERIPHERAL SHAPE STYLE | ROUND | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | SURFACE TREATMENT | ANODIZE OVERALL | THICKNESS | 0.032 INCHES NOMINAL |
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