5998-01-475-3399 CIRCUIT CARD ASSEMBLY Index 5305-01-475-3401 SCREW,CLOSE TOLERANCE

National Stock Number:
5310-01-475-3400

Federal Supply Class:
5310

National Item Identification Number:
014753400

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:
MS21299-5K80205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.314 INCHES MINIMUM AND 0.318 INCHES MAXIMUM
OVERALL DIAMETER0.588 INCHES MINIMUM AND 0.598 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5604,17-4PH,COND H 1025 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 630 OVERALL
PERIPHERAL SHAPE STYLEROUND
SPECIFICATION/STANDARD DATA80205-NAS-21299 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE FINISH125.0 MICROINCHES ALL SURFACES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM


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