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National Stock Number:
5310-99-051-2301
Federal Supply Class:
5310
National Item Identification Number:
990512301
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:
| 75A787465-2003 | 96916 | FLEET READINESS CENTER EAST DIV DEPARTMENT OF NAVY | | 75A787465-2003 | K0289 | BRITISH AEROSPACE MILITARY AIRCRAFT & AEROSTRUCTURES | | 75A787465-2003 | K1987 | BAE SYSTEMS PLC | | 75A787465-2003 | U9143 | BAE SYSTEMS (OPERATIONS) LIMITED |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | COLOR | ERR-030 OVERALL | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 4.85 MILLIMETERS NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | S07-1008, BAE PLC MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | ALUMINUM ALLOY OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 0.750 INCHES NOMINAL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | SL4851 CODE AK MFR REF 1ST TREATMENT RESPONSE OVERALL AND SL4851 CODE RB MFR REF 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ANODIZE OVERALL AND PAINT OVERALL | | THICKNESS | 0.022 INCHES NOMINAL |
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