5310-00-167-0741 WASHER,FLAT Index 5310-00-167-0743 WASHER,FLAT

National Stock Number:
5310-00-167-0742

Federal Supply Class:
5310

National Item Identification Number:
001670742

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:
10335605A486GNIMIKKEISTOKESKUS NCB FINLAND
50IN81638597LOCKHEED MARTIN CORPORATION
AN960D81688044AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HEAT TREATMENTT-3 SOLUTION HEAT TREATED, COLD WORKED
HOLE DIAMETER0.515 INCHES NOMINAL
OVERALL DIAMETER0.870 INCHES MINIMUM AND 0.875 INCHES MAXIMUM
MATERIALALUMINUM ALLOY OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.070 INCHES NOMINAL


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