5310-00-639-0272 WASHER,FLAT Index 5365-00-639-0275 SPACER,RING

National Stock Number:
5310-00-639-0274

Federal Supply Class:
5310

National Item Identification Number:
006390274

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:
A289498889AEROCONTROLEX GROUP, INC.


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.156 INCHES NOMINAL
OVERALL DIAMETER0.375 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1018 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTTIN OVERALL
THICKNESS0.0408 INCHES NOMINAL


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