5310-00-857-6146 WASHER,FLAT Index 5305-00-857-6150 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5310-00-857-6147

Federal Supply Class:
5310

National Item Identification Number:
008576147

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.


Manufacturer Information:
37601851535CREST GOOD MANUFACTURING CO INC
376018JA269TOKYO JUDOI KOGYO K.K.
37610877445RTX CORPORATION
376018S0554TOKYO JUDOGI KOGYO CO.


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HEAT TREATMENTANNEALED
HOLE DIAMETER0.443 INCHES MINIMUM AND 0.453 INCHES MAXIMUM
OVERALL DIAMETER0.673 INCHES MINIMUM AND 0.683 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4500 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY 101 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTSILVER OVERALL
THICKNESS0.048 INCHES MINIMUM AND 0.056 INCHES MAXIMUM


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