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National Stock Number:
5310-01-508-1286
Federal Supply Class:
5310
National Item Identification Number:
015081286
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:
| 6390826-25 | 31442 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 6390826-25 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 1.265 INCHES NOMINAL | | OVERALL DIAMETER | 2.500 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-T-9046, COMP CP-3 OR AB-2 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-T-9047, COMP 6A1-4V, CONDITION A MIL SPEC 2ND MATERIAL RESPONSE OVERALL | | MATERIAL | TITANIUM ALLOY UNS R56401 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | WASHER THREAD SIZE 1.250 IN | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2488B, TYPE 2 ASSN STD 1ST TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ANODIZE OVERALL | | THICKNESS | 0.250 INCHES NOMINAL |
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