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National Stock Number:
5310-01-074-8990
Federal Supply Class:
5310
National Item Identification Number:
010748990
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:
| 12273983 | 19200 | US ARMY ARDEC RDECOM | | 12273983 | 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 | 0.3775 INCHES NOMINAL | | OVERALL DIAMETER | 0.760 INCHES NOMINAL | | MATERIAL | STEEL COMP 410 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | HEAT TREATMENT,QUENCH AND TEMPER HARDNESS 35/40 RC; ITEM USED ON XM1 | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35,TYPE III FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THICKNESS | 0.0355 INCHES NOMINAL |
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