5310-01-516-3410 WASHER,LOCK Index 3120-01-516-3412 BEARING,SLEEVE

National Stock Number:
5310-01-516-3411

Federal Supply Class:
5310

National Item Identification Number:
015163411

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:
236-8021P300243THE RY FERNER CO INC DBA METRIC SCREW AND TOOL
236-8021P309675RAYTHEON CANADA LIMITED


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER3.200 INCHES MINIMUM AND 3.380 INCHES MAXIMUM
OVERALL DIAMETER6.600 INCHES MINIMUM AND 7.000 INCHES MAXIMUM
MATERIALSTEEL COMP 304 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.450 INCHES MINIMUM AND 0.550 INCHES MAXIMUM


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