5310-01-163-5688 WASHER,FLAT Index 5310-01-163-5691 WASHER,FLAT

National Stock Number:
5310-01-163-5690

Federal Supply Class:
5310

National Item Identification Number:
011635690

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:
2BA33745152OSHKOSH CORP
2BA33775Q65OSHKOSH DEFENSE LLC
517841298343MIDLAND BRAKE INC DIV OF ECHLIN INC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.525 INCHES MINIMUM AND 0.545 INCHES MAXIMUM
OVERALL DIAMETER1.368 INCHES MINIMUM AND 1.405 INCHES MAXIMUM
MATERIALSTEEL COMP 1050 OVERALL
PERIPHERAL SHAPE STYLEDEE
WIDTH1.237 INCHES NOMINAL
THICKNESS0.134 INCHES NOMINAL


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