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National Stock Number:
5310-01-539-9991
Federal Supply Class:
5310
National Item Identification Number:
015399991
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:
| NAS1149 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | | NAS1149F0763B | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |
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Techincal Specification:
| MATERIAL | STEEL COMP 1020 OR | | STEEL UNS K02500 OR | | STEEL COMP 1025 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM-A109, TEMPER 2 (55 KSI MIN UTS) NATIONAL SPEC SINGLE MATERIAL RESPONSE OR | | MIL-S-7952 MIL STD SINGLE MATERIAL RESPONSE OR | | MIL-S-1025 MIL STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | OXIDE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924 MIL STD SINGLE TREATMENT RESPONSE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.443 INCHES MINIMUM AND | | 0.463 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 0.745 INCHES MINIMUM AND | | 0.770 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.059 INCHES MINIMUM AND | | 0.067 INCHES MAXIMUM | | COLOR | BLACK OVERALL | | SURFACE FINISH | 0.1 MICROMETERS ALL SURFACES | | ENVIRONMENTAL PROTECTION | CORROSION RESISTANT | | PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER, FLAT |
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