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National Stock Number:
5310-00-205-7259
Federal Supply Class:
5310
National Item Identification Number:
002057259
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:
| 6740962 | 24617 | GENERAL MOTORS CORP | | 6740962 | 51226 | ASSOCIATED AEROSPACE ACTIVITIES INC | | 9039081-1 | 24617 | GENERAL MOTORS CORP | | 6740962 | 73342 | ALLISON TRANSMISSION INC |
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Techincal Specification:
| MATERIAL | STEEL COMP 1035 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5080 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.404 INCHES MINIMUM AND | | 0.413 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 0.990 INCHES MINIMUM AND | | 1.010 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.154 INCHES MINIMUM AND | | 0.158 INCHES MAXIMUM | | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND | | 32.0 ROCKWELL C MAXIMUM | | SURFACE FINISH | 63.0 MICROINCHES ALL SURFACES | | SPECIAL FEATURES | OUTER PERIPHERY OF ONE BEARING SURFACE IS BEVELLED 0.656 IN. DIA OF SMALL BEARING SURFACE 0.078 IN. DEPTH OF UNBEVELLED PORTION OF THK | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 51226 | | DESIGN CONTROL REFERENCE | 6740962 |
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