5310-01-609-4481 WASHER,FLAT 5310-01-609-4772 WASHER,LOCK

National Stock Number:
5310-01-609-4645

Federal Supply Class:
5310

National Item Identification Number:
016094645

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:
302-8278673ITEM3753711NAVAL SEA SYSTEMS COMMAND
J2655FAN0375G1Z0U583SAE INTERNATIONAL
J2655FAN0375G1Z81343SOCIETY OF AUTOMOTIVE ENGINEERS INC


Techincal Specification:
MATERIALSTEEL OVERALL
SURFACE TREATMENTZINC OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.406 INCHES NOMINAL
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER0.812 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.065 INCHES NOMINAL
HARDNESS RATING90.0 ROCKWELL B MINIMUM


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