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National Stock Number: 5310-00-655-9541
Federal Supply Class: 5310
National Item Identification Number: 006559541
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:
5310006559541 | SCY13 | E.C.A ETABLISSEMENT CENTRALD'APPROVISIONNEMENT DES FORCES ARMEE | 8754688 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | LS9851-9 | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
CENTER HOLE SHAPE STYLE | ROUND | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM | HEAT TREATMENT | QUENCHED AND TEMPERED | HOLE DIAMETER | 0.564 INCHES MINIMUM AND 0.566 INCHES MAXIMUM | OVERALL DIAMETER | 1.004 INCHES MINIMUM AND 1.009 INCHES MAXIMUM | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-698 FED SPEC ALL MATERIAL RESPONSES OVERALL | MATERIAL | STEEL COMP 1060 OR STEEL COMP 1064 OR STEEL COMP 1065 OVERALL | PERIPHERAL SHAPE STYLE | ROUND | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | SURFACE TREATMENT | CADMIUM OVERALL | THICKNESS | 0.090 INCHES NOMINAL |
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