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National Stock Number:
5310-01-494-1060
Federal Supply Class:
5310
National Item Identification Number:
014941060
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:
| 12447535 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.630 INCHES MINIMUM AND 0.690 INCHES MAXIMUM | | OVERALL DIAMETER | 2.880 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A109 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A366 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A569 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | SURFACE TREAMENT 0.3 MLS THICK MIN | | SUPPLEMENTARY FEATURES | CONTROLLING AGENCY NOMENCLATURE RETAINER | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | THICKNESS | 0.1793 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM |
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