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National Stock Number:
5310-01-296-2880
Federal Supply Class:
5310
National Item Identification Number:
012962880
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:
| 5497671-1 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 5497671-1 | 5D286 | LOCKHEED MARTIN CORP LOCKHEED MARTIN LABORATORIES M/P 24 |
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Techincal Specification:
| MATERIAL | STEEL OR | | STEEL COMP 1026 OR | | STEEL COMP 1029 OR | | STEEL COMP 1030 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A36 ASSN STD ALL MATERIAL RESPONSES OVERALL | | SURFACE TREATMENT | CADMIUM AND | | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.780 INCHES MINIMUM AND | | 0.789 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | DEE | | WIDTH | 1.640 INCHES NOMINAL | | OVERALL DIAMETER | 2.000 INCHES NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.250 INCHES NOMINAL |
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