9340-00-171-4530 WINDOW,OBSERVATION Index 5310-00-171-4532 NUT,PLAIN,HEXAGON

National Stock Number:
5310-00-171-4531

Federal Supply Class:
5310

National Item Identification Number:
001714531

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:
37B202105P10177264PHOENIX SPECIALTY MFG CO INC
37B202105P10199207GENERAL ELECTRIC COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.270 INCHES NOMINAL
OVERALL DIAMETER0.490 INCHES MINIMUM AND 0.520 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5510 OR 5645 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 321 OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM


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