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National Stock Number:
5310-01-272-0391
Federal Supply Class:
5310
National Item Identification Number:
012720391
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:
| 176C2143-4 | 05606 | GENERAL DYNAMICS-OTS, INC. |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 1.185 INCHES MINIMUM AND 1.195 INCHES MAXIMUM | | OVERALL DIAMETER | 2.187 INCHES MINIMUM AND 2.219 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 COND A FED SPEC ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP 316 OR STEEL COMP 316L OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT | PASSIVATE OVERALL | | THICKNESS | 0.448 INCHES MINIMUM AND 0.452 INCHES MAXIMUM |
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