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National Stock Number:
5310-01-542-3775
Federal Supply Class:
5310
National Item Identification Number:
015423775
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:
| 12341212 | 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 | BLANK RECTANGULAR | | HEAT TREATMENT | QUENCHED AND TEMPERED | | HOLE DIAMETER | 0.654 INCHES MINIMUM AND 0.666 INCHES MAXIMUM | | OVERALL DIAMETER | 1.250 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTMA684 NATIONAL SPEC ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP 1050 AND STEEL COMP 1070 OVERALL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER,HARDENED FLAT | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | REMOVE ALL BURRS AND SHARP EDGES | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTMB633 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | THICKNESS | 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM |
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