5310-01-291-7929 WASHER,FLAT Index 5310-01-291-7931 WASHER,FLAT

National Stock Number:
5310-01-291-7930

Federal Supply Class:
5310

National Item Identification Number:
012917930

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.


Manufacturer Information:
17W0351013764MICRO PLASTICS INC
999/9/38411/002K1156BAE SYSTEMS INTEGRATED SYSTEM TECHNOLOGIES LTD
W351013764MICRO PLASTICS INC
PT6036-4-831110-002K0835QINETIQ LTD
999/9/38411/002K6036G E C MARCONI DEFENCE SYSTEMS LTD


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