6220-00-722-4740 LIGHT,DOME Index 4820-00-722-4743 VALVE,PLUG

National Stock Number:
5310-00-722-4742

Federal Supply Class:
5310

National Item Identification Number:
007224742

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:
39591730201TREGO INC
39591731633ALINABAL HOLDINGS CORPORATION
39591762224SATELLITE AEROSPACE, INCORPORATED
39591777445RTX CORPORATION
395917JA269TOKYO JUDOI KOGYO K.K.
395917S0554TOKYO JUDOGI KOGYO CO.


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING20.0 ROCKWELL C MINIMUM AND 28.0 ROCKWELL C MAXIMUM
HEAT TREATMENTAS FABRICATED
HOLE DIAMETER0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM
OVERALL DIAMETER0.705 INCHES MINIMUM AND 0.715 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5504 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 410 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE FINISH63.0 MICROINCHES BOTTOM
SURFACE FINISH63.0 MICROINCHES TOP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTSILVER OVERALL
THICKNESS0.038 INCHES MINIMUM AND 0.043 INCHES MAXIMUM


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