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National Stock Number:
5310-00-452-4775
Federal Supply Class:
5310
National Item Identification Number:
004524775
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:
| 99-6039162 | 99995 | NATO STOCK NUMBER ASSIGNED BY ANOTHER NATION | | STD2186-1 | K0289 | BRITISH AEROSPACE MILITARY AIRCRAFT & AEROSTRUCTURES | | STD2186-1 | K1987 | BAE SYSTEMS PLC | | STD2186-1 | U9143 | BAE SYSTEMS (OPERATIONS) LIMITED |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.375 INCHES NOMINAL | | OVERALL DIAMETER | 0.719 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | SPECIAL FEATURES | 2 EQUALLY SPACED PROJECTIONS EXTENDING FROM BEARING SURFACE EACH SIDE OF CENTRALLY LOCATED HOLE 0.125 IN. WIDE BY 0.188 IN. HIGH;2 HOLES 0.043 IN. DIA,THRU WASHER PERIPHERY AND PARALLEL TO PROJECTIONS | | PERIPHERAL SHAPE STYLE | ROUND | | THICKNESS | 0.125 INCHES NOMINAL |
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