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National Stock Number:
5310-00-337-6977
Federal Supply Class:
5310
National Item Identification Number:
003376977
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:
| FFW92TYPEAGRADE2CLASSA | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC | | G2608 | 77260 | PIERCE CO INC THE SUB OF AVIS INDUSTRIAL CORP | | NNU1318 | 28365 | TELEDYNE COLUMBIA-SUMMERILL CO DIV OF TELEDYNE INC |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY ID | | HOLE DIAMETER | 0.438 INCHES MINIMUM AND 0.442 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL | | OVERALL DIAMETER | 0.750 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | NONDEFINITIVE SPEC/STD DATA | A TYPE AND 2 GRADE AND A CLASS | | PERIPHERAL SHAPE STYLE | ROUND | | THICKNESS | 0.064 INCHES NOMINAL |
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