5355-00-760-7544 KNOB Index 3010-00-760-7550 COUPLING HALF,SHAFT

National Stock Number:
5310-00-760-7548

Federal Supply Class:
5310

National Item Identification Number:
007607548

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:
760754819200US ARMY ARDEC RDECOM


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING70.0 ROCKWELL B MINIMUM AND 85.0 ROCKWELL B MAXIMUM
HOLE DIAMETER0.378 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
OVERALL DIAMETER0.781 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-00640,T2 CANC FED SPEC ALL MATERIAL RESPONSES OVERALL
MATERIALSTEEL COMP 1009 OR STEEL COMP 1015 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-Z-325 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTZINC OVERALL
THICKNESS0.062 INCHES NOMINAL


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