3120-01-021-8929 BUSHING,DRUM Index 3120-01-021-8931 BEARING,SLEEVE

National Stock Number:
5310-01-021-8930

Federal Supply Class:
5310

National Item Identification Number:
010218930

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:
113401-146964LIFT-TECH INTL INC CRANE AND HOIST OPNS


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING48.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
HEAT TREATMENTANNEALED
HOLE DIAMETER0.760 INCHES MINIMUM AND 0.770 INCHES MAXIMUM
OVERALL DIAMETER2.000 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1075 OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.0478 INCHES NOMINAL


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