5310-01-197-4475 WASHER,FLAT Index 5310-01-197-4477 WASHER,FLAT

National Stock Number:
5310-01-197-4476

Federal Supply Class:
5310

National Item Identification Number:
011974476

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:
298-42-9761361REXWORKS INC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.812 INCHES MINIMUM AND 0.843 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A242 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR ASTM A588 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR ASTM A709 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
PERIPHERAL SHAPE STYLEROUND
PROPRIETARY CHARACTERISTICSPACS
OVERALL DIAMETER1.438 INCHES MINIMUM AND 1.500 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B695 CLASS 50 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTZINC OVERALL
THICKNESS0.122 INCHES MINIMUM AND 0.177 INCHES MAXIMUM


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