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National Stock Number:
5310-01-312-0712
Federal Supply Class:
5310
National Item Identification Number:
013120712
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:
| 7239897P2 | 03538 | LOCKHEED MARTIN CORPORATION |
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Techincal Specification:
| MATERIAL | ALUMINUM ALLOY 5052 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-250/8,TP H-32 FED SPEC SINGLE MATERIAL RESPONSE OR | | B12H17B,CAGEC 03538 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OR | | F65E-GP4-P1,GAGEC 03538 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.204 INCHES NOMINAL | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 0.500 INCHES NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.170 INCHES NOMINAL | | HEAT TREATMENT | H-32 STRAIN HARDENED, STABILIZED TO 1/4 HARD |
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