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National Stock Number:
5310-00-143-6394
Federal Supply Class:
5310
National Item Identification Number:
001436394
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:
| 10498738 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | 10941915 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | 10941915-6 | 19200 | US ARMY ARDEC RDECOM | | 10941915-6 | 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 | 33.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM | | HEAT TREATMENT | QUENCHED AND TEMPERED | | HOLE DIAMETER | 0.584 INCHES MINIMUM AND 0.604 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | | | MATERIAL | | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM | | SURFACE TREATMENT | CADMIUM OVERALL | | THICKNESS | 0.157 INCHES MINIMUM AND 0.171 INCHES MAXIMUM |
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