5310-01-210-3877 WASHER,KEY Index 5310-01-210-3879 WASHER,FLAT

National Stock Number:
5310-01-210-3878

Federal Supply Class:
5310

National Item Identification Number:
012103878

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:
773978919207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
CS-2300-000116236DLA LAND AND MARITIME DBA ENGINEERING AND TECHNICAL SUPPORT DIV DOCUMENT STANDARDIZATION DIVISION (VENDOR ITEM DRAWINGS)


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER1.016 INCHES NOMINAL
OVERALL DIAMETER1.500 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 316 OVERALL
MINIMUM TENSILE STRENGTH155000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH140000 POUNDS PER SQUARE INCH
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.0285 INCHES MINIMUM AND 0.0315 INCHES MAXIMUM


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