5961-01-521-3579 SEMICONDUCTOR DEVICE,DIODE Index 5310-01-521-3581 WASHER,FLAT

National Stock Number:
5310-01-521-3580

Federal Supply Class:
5310

National Item Identification Number:
015213580

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:
98029A03139428MCMASTER-CARR SUPPLY CO


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
COLORBLACK OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING40.0 ROCKWELL C MINIMUM
HOLE DIAMETER0.4062 INCHES NOMINAL
OVERALL DIAMETER0.8750 INCHES NOMINAL
PART NAME ASSIGNED BY CONTROLLING AGENCYBLACK-OXIDE CASE-HARDENED STEEL WASHER
MATERIALSTEEL COMP 1008 AND STEEL COMP 1010 AND STEEL COMP 12L14 OVERALL
PERIPHERAL SHAPE STYLEROUND
SPECIAL FEATURESFOR 3/8" SCREW SIZE
SURFACE TREATMENTOXIDE OVERALL
THICKNESS0.11 INCHES MINIMUM AND 0.14 INCHES MAXIMUM


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