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National Stock Number:
5310-01-450-4202
Federal Supply Class:
5310
National Item Identification Number:
014504202
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:
| HTA-4-500 | 63590 | SPC TECHNOLOGY - NEWARK | | HTA-4-500A | 63590 | SPC TECHNOLOGY - NEWARK |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | BLANK RECTANGULAR | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | ALUMINUM ALLOY 2011 OVERALL | | PERIPHERAL SHAPE STYLE | HEXAGON | | SPECIAL FEATURES | WEIGHT PER 100 0.236 POUNDS; THREAD SIZE 4-40 UNC-2B; PART NAME ASSIGNED BY MANUFACTURER SPACER, HEX, THREADED | | WIDTH ACROSS FLATS | 0.250 INCHES NOMINAL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CHROMATE OVERALL |
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