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National Stock Number:
5310-01-351-7807
Federal Supply Class:
5310
National Item Identification Number:
013517807
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:
| 5310PL1017670 | 9009H | INSPEKTORAT WSPARCIA SIL ZBROJNYCH | | LS35307-6M | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM | | HOLE DIAMETER | 0.385 INCHES MINIMUM AND 0.395 INCHES MAXIMUM | | OVERALL DIAMETER | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC 2ND MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 4130 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL | | THICKNESS | 0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM |
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