4540-01-087-7028 HEATING ELEMENT,ELECTRICAL,NONIMMERSION TYPE Index 5310-01-087-7030 WASHER,FLAT

National Stock Number:
5310-01-087-7029

Federal Supply Class:
5310

National Item Identification Number:
010877029

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:
NAS1515B580205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE


Techincal Specification:
MATERIALRUBBER SYNTHETIC OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONZZ-R-765,CL 2,GR 50 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.318 INCHES MINIMUM AND
0.338 INCHES MAXIMUM
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER0.557 INCHES MINIMUM AND
0.582 INCHES MAXIMUM
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.053 INCHES MINIMUM AND
0.073 INCHES MAXIMUM
HARDNESS RATING45.0 SHORE DUROMETER A MINIMUM AND
55.0 SHORE DUROMETER A MAXIMUM
SPECIFICATION/STANDARD DATA80205-NAS1515 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
MINIMUM TENSILE STRENGTH70000 POUNDS PER SQUARE INCH


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