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National Stock Number:
5310-00-540-4976
Federal Supply Class:
5310
National Item Identification Number:
005404976
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:
| 171801 | 0AHP5 | CURTISS-WRIGHT CONTROLS, INC. | | 2810H34-047 | 81996 | U S ARMY AVIATION AND MISSILE COMMAND | | 2810H34-047-3 | 81996 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM | | HEAT TREATMENT | AS FABRICATED | | HOLE DIAMETER | 0.271 INCHES MINIMUM AND 0.286 INCHES MAXIMUM | | OVERALL DIAMETER | 0.560 INCHES MINIMUM AND 0.580 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6357 ASSN STD 1ST MATERIAL RESPONSE AND SAE ASSN STD 2ND MATERIAL RESPONSE AND SAE ASSN STD 3RD MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 8630 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE FINISH | 50.0 MICROINCHES BOTTOM | | SURFACE FINISH | 50.0 MICROINCHES TOP | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OR AMS 2800 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THICKNESS | 0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM |
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