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National Stock Number:
5310-00-845-1956
Federal Supply Class:
5310
National Item Identification Number:
008451956
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:
| 9138622 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | G210554-4 | 64959 | AMERICAN TELEPHONE AND TELEGRAPH CO | | G210554-4 | 84479 | H. K. METAL CRAFT MANUFACTURING CORPORATION |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.175 INCHES MINIMUM AND 0.185 INCHES MAXIMUM | | OVERALL DIAMETER | 0.380 INCHES MINIMUM AND 0.420 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT | ZINC OVERALL | | THICKNESS | 0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM |
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