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National Stock Number:
5310-01-055-7778
Federal Supply Class:
5310
National Item Identification Number:
010557778
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:
| N402P71B7 | 01288 | GENERAL ELECTRIC CO DIRECT CURRENT MOTOR AND GENERATOR DEPT |
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Techincal Specification:
| CRITICALITY CODE JUSTIFICATION | ZZZY | | HOLE DIAMETER | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM | | OVERALL DIAMETER | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM | | PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER,FLAT | | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS. | | THICKNESS | 0.056 INCHES MINIMUM AND 0.071 INCHES MAXIMUM |
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