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National Stock Number:
5310-00-501-9590
Federal Supply Class:
5310
National Item Identification Number:
005019590
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:
| 5019590 | 19204 | ARMY, UNITED STATES DEPARTMENT OF THE |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 1.609 INCHES MINIMUM AND 1.641 INCHES MAXIMUM | | OVERALL DIAMETER | 3.234 INCHES MINIMUM AND 3.266 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP 1018 OR STEEL COMP 1022 OR STEEL COMP 1118 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | OUTSIDE EDGE ON ONE SIDE HAS 1/8 INCH PORM 1/64 INCH BY 45 DEGREE PORM 1 DEGREE CHAMFER | | SURFACE TREATMENT | PHOSPHATE OVERALL | | THICKNESS | 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM |
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