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National Stock Number:
5310-01-188-5173
Federal Supply Class:
5310
National Item Identification Number:
011885173
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:
| 75A326836-2003 | K0289 | BRITISH AEROSPACE MILITARY AIRCRAFT & AEROSTRUCTURES | | 75A326836-2003 | K1987 | BAE SYSTEMS PLC |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.246 INCHES MINIMUM AND 0.254 INCHES MAXIMUM | | LENGTH | 0.596 INCHES MINIMUM AND 0.604 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | HC101,FSCM K0289 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | PERIPHERAL SHAPE STYLE | RECTANGULAR | | PROPRIETARY CHARACTERISTICS | PACS | | SPECIAL FEATURES | 0.125 IN RADIUS ALL CORNERS,0.180 IN RADIUS ONE SIDE OF ONE END | | WIDTH ACROSS FLATS | 0.496 INCHES MINIMUM AND 0.504 INCHES MAXIMUM | | THICKNESS | 0.060 INCHES MINIMUM AND 0.068 INCHES MAXIMUM |
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