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National Stock Number:
5310-00-461-5534
Federal Supply Class:
5310
National Item Identification Number:
004615534
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:
| 5310PL2220345 | 9009H | INSPEKTORAT WSPARCIA SIL ZBROJNYCH | | 812357 | 19203 | PICATINNY ARSENAL | | 812357 | 32345 | DEFENSE REDUCTION AGENCY | | AN961-516 | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE | | AN961-516T | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE | | MS45901-6 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM | | OVERALL DIAMETER | 0.557 INCHES MINIMUM AND 0.582 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-W-321,1/2 HARD FED SPEC 1ST MATERIAL RESPONSE OR QQ-B-626,1/2 HARD FED SPEC 2ND MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER ALLOY 270 OR COPPER ALLOY 268 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT | TIN OR SILVER OVERALL | | THICKNESS | 0.054 INCHES MINIMUM AND 0.074 INCHES MAXIMUM |
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