3120-00-528-3708 BEARING,WASHER,THRUST Index 4810-00-528-3711 VALVE,BUTTERFLY

National Stock Number:
5310-00-528-3709

Federal Supply Class:
5310

National Item Identification Number:
005283709

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:
528370919207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
A28370900000ORDNANCE CORPS


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER1.281 INCHES MINIMUM AND 1.312 INCHES MAXIMUM
OVERALL DIAMETER1.865 INCHES MINIMUM AND 1.870 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-636-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.0359 INCHES NOMINAL


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