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National Stock Number:
5310-00-187-3458
Federal Supply Class:
5310
National Item Identification Number:
001873458
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:
| 7402849 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | M42XA | 79575 | WICO-PRESTOLITE CO THE DIV OF ELTRA CORP | | WPP156 | 79172 | SIEMENS WATER TECHNOLOGIES CORP. DIV WALLACE & TIERNAN PRODUCTS |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 85.0 ROCKWELL B MINIMUM | | HOLE DIAMETER | 0.377 INCHES MINIMUM AND 0.383 INCHES MAXIMUM | | OVERALL DIAMETER | 0.834 INCHES MINIMUM AND 0.854 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 1020 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT | ZINC OVERALL | | THICKNESS | 0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM |
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