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National Stock Number:
5310-00-004-1503
Federal Supply Class:
5310
National Item Identification Number:
000041503
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:
| AN961-4S | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | | AN961-4S | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE | | FF-W-92 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES 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 | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM | | OVERALL DIAMETER | 0.307 INCHES MINIMUM AND 0.332 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-626,1/2 H FED SPEC 1ST MATERIAL RESPONSE OR QQ-W-321,1/2 HARD FED SPEC 2ND MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER ALLOY 268 OR COPPER ALLOY 270 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | PRECIOUS MATERIAL AND LOCATION | OVERALL SILVER | | PRECIOUS MATERIAL | SILVER | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-S-365,GR B FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | SILVER OVERALL | | THICKNESS | 0.022 INCHES MINIMUM AND 0.042 INCHES MAXIMUM |
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