5310-01-341-4734 WASHER,KEY Index 5310-01-341-4736 WASHER,FLAT

National Stock Number:
5310-01-341-4735

Federal Supply Class:
5310

National Item Identification Number:
013414735

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:
875429319207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING43.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM
HOLE DIAMETER1.150 INCHES NOMINAL
OVERALL DIAMETER2.380 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-698 FED SPEC ALL MATERIAL RESPONSES OVERALL
MATERIALSTEEL COMP 1060 OR STEEL COMP 1065 OR STEEL COMP 1075 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTPHOSPHATE OVERALL
THICKNESS0.046 INCHES MINIMUM AND 0.048 INCHES MAXIMUM


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