5305-00-435-9124 SCREW,MACHINE Index 5330-00-435-9128 RETAINER,SEAL,VAPOR

National Stock Number:
5310-00-435-9125

Federal Supply Class:
5310

National Item Identification Number:
004359125

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:
0464-456232LOCKHEED MARTIN CORPORATION
210-0938-0080009TEKTRONIX, INC.
92916A10539428MCMASTER-CARR SUPPLY CO
310-0243-0079807WROUGHT WASHER MFG., INC.


Techincal Specification:
MATERIALCOPPER ALLOY OVERALL
SURFACE TREATMENTNICKEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.102 INCHES MINIMUM AND
0.112 INCHES MAXIMUM
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER0.234 INCHES MINIMUM AND
0.266 INCHES MAXIMUM
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.032 INCHES NOMINAL


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