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National Stock Number:
5310-01-282-3391
Federal Supply Class:
5310
National Item Identification Number:
012823391
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:
| 153411 | 15434 | CUMMINS INC. | | 2051 0303 | 05MG0 | MILITARY TRUCKS & PARTS, INC. | | 20510303 | 3T063 | MOTOR CITY FASTENERS INC | | 2051 0303 | 47457 | HARSCO CORPORATION DBA B M Y WYNE WHELED VEHICLES DIV |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM | | HOLE DIAMETER | 0.495 INCHES MINIMUM AND 0.515 INCHES MAXIMUM | | OVERALL DIAMETER | 0.880 INCHES MINIMUM AND 0.920 INCHES MAXIMUM | | MATERIAL | STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1054 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1062 OR STEEL COMP 1064 OR STEEL COMP 1065 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT | CADMIUM OR ZINC OVERALL | | THICKNESS | 0.090 INCHES MINIMUM AND 0.120 INCHES MAXIMUM |
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