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National Stock Number:
5310-00-679-9813
Federal Supply Class:
5310
National Item Identification Number:
006799813
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:
| 8763497 | 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 | | FEATURES PROVIDED | CASEHARDENED | | HARDNESS RATING | 80.5 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 85.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM | | HOLE DIAMETER | 0.646 INCHES MINIMUM AND 0.666 INCHES MAXIMUM | | OVERALL DIAMETER | 1.303 INCHES MINIMUM AND 1.323 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | -QQ-S-640 CANC FED SPEC ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1020 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 1,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THICKNESS | 0.074 INCHES MINIMUM AND 0.121 INCHES MAXIMUM |
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