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National Stock Number:
5310-01-177-2574
Federal Supply Class:
5310
National Item Identification Number:
011772574
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:
| 825536-1 | 96214 | RAYTHEON COMPANY |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.630 INCHES NOMINAL | | OVERALL DIAMETER | 0.860 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | ALUMINUM ALLOY OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | PRECIOUS MATERIAL AND LOCATION | EXTERNAL SURFACE SILVER | | SUPPLEMENTARY FEATURES | USED FOR GROUNDING | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-26074,CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-C-14550,CLASS 3 MIL SPEC 2ND TREATMENT RESPONSE AND QQ-S-365,TYPE 2,GRADE A FED SPEC 3RD TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | NICKEL AND COPPER AND SILVER OVERALL | | THICKNESS | 0.020 INCHES NOMINAL |
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