2520-00-679-7045 SEAL,PLAIN ENCASED Index 3110-00-679-7048 BALL,BEARING

National Stock Number:
5310-00-679-7047

Federal Supply Class:
5310

National Item Identification Number:
006797047

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:
1086313619207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
675503724617GENERAL MOTORS CORP
675503773342ALLISON TRANSMISSION INC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM
HEAT TREATMENTNORMALIZED AND TEMPERED
HOLE DIAMETER1.750 INCHES NOMINAL
OVERALL DIAMETER2.400 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1070 OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.157 INCHES MINIMUM AND 0.172 INCHES MAXIMUM


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