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National Stock Number:
5310-99-798-8469
Federal Supply Class:
5310
National Item Identification Number:
997988469
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:
| 75A3264-2005 | K0289 | BRITISH AEROSPACE MILITARY AIRCRAFT & AEROSTRUCTURES | | 75A3264-2005 | K1987 | BAE SYSTEMS PLC | | 75A326434-2005 | K0289 | BRITISH AEROSPACE MILITARY AIRCRAFT & AEROSTRUCTURES | | 75A326434-2005 | K1987 | BAE SYSTEMS PLC | | 75A326434-2005 | U1602 | BRITISH AEROSPACE PLC | | 75A326434-2005 | U9143 | BAE SYSTEMS (OPERATIONS) LIMITED |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | COLOR | NATURAL | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.250 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | BS HC101 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | PERIPHERAL SHAPE STYLE | SQUARE | | SPECIAL FEATURES | 0.40 IN. RADIUS ALONG ONE OUTSIDE EDGE 0.50 IN.LG | | WIDTH ACROSS FLATS | 0.500 INCHES NOMINAL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MOD (PE) /DMAT DTD 904 NATIONAL STD/SPEC 1ST TREATMENT RESPONSE AND MOD DEF 130 NATIONAL STD/SPEC 2ND TREATMENT RESPONSE AND EPOXY PRIMER,BRITISH AEROSPACE AIRCRAFT GROUP HSA S26-3512 MFR REF 3RD TREATMENT RESPONSE | | SURFACE TREATMENT | CADMIUM AND CHROMATE AND PAINT | | THICKNESS | 0.096 INCHES NOMINAL |
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