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National Stock Number:
5310-01-396-0967
Federal Supply Class:
5310
National Item Identification Number:
013960967
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:
| 3341022-1 | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| MATERIAL | STEEL COMP 4130 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.780 INCHES MINIMUM AND | | 0.791 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | OVAL | | WIDTH | 1.470 INCHES MINIMUM AND | | 1.530 INCHES MAXIMUM | | RADIUS AT SMALL END | 0.130 INCHES NOMINAL | | RADIUS AT LARGE END | 0.750 INCHES NOMINAL | | LENGTH | 1.920 INCHES NOMINAL | | THICKNESS | 0.032 INCHES NOMINAL | | SPECIAL FEATURES | ROUND HOLE WITH A DIAMETER OF .054 MIN AND .059 MAX LOCATED NEAR RADIUS AT SMALL END;.27 INCHES OF WASHER LENGTH BEGINNING AT RADIUS AT SMALL END IS SLANTED 30 DEGREES |
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