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National Stock Number:
5310-99-796-6459
Federal Supply Class:
5310
National Item Identification Number:
997966459
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:
| 75A657657 | K0289 | BRITISH AEROSPACE MILITARY AIRCRAFT & AEROSTRUCTURES | | 75A657657 | U9143 | BAE SYSTEMS (OPERATIONS) LIMITED | | 75A657657 ISSUE 6 | K0289 | BRITISH AEROSPACE MILITARY AIRCRAFT & AEROSTRUCTURES | | 75A657657-2003 | K0289 | BRITISH AEROSPACE MILITARY AIRCRAFT & AEROSTRUCTURES | | 75A657657-2003 | K1987 | BAE SYSTEMS PLC | | 75A657657-2003 | U9143 | BAE SYSTEMS (OPERATIONS) LIMITED |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.328 INCHES MINIMUM AND 0.333 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | BS S92 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | STEEL | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DTD 904 MIL STD 1ST TREATMENT RESPONSE AND DEF 130 MIL STD 2ND TREATMENT RESPONSE | | SURFACE TREATMENT | CADMIUM AND CHROMATE | | THICKNESS | 0.095 INCHES MINIMUM AND 0.105 INCHES MAXIMUM |
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