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National Stock Number:
5310-01-195-7959
Federal Supply Class:
5310
National Item Identification Number:
011957959
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:
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 30.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM | | HOLE DIAMETER | 0.660 INCHES NOMINAL | | OVERALL DIAMETER | 1.380 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | JDM 1080 ANNEALED,FSCM 75160 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 1080 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | JDT 395,FSCM 75160 MFR REF ALL TREATMENT RESPONSES OVERALL | | SURFACE TREATMENT | ZINC AND DICHROMATE OVERALL | | THICKNESS | 0.120 INCHES NOMINAL |
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