5310-00-890-7982 WASHER,FLAT Index 5330-00-890-7984 FELT,MECHANICAL,PREFORMED

National Stock Number:
5310-00-890-7983

Federal Supply Class:
5310

National Item Identification Number:
008907983

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:
716893-4573030HAMILTON SUNDSTRAND CORPORATION


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
HOLE DIAMETER1.625 INCHES MINIMUM AND 1.635 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6415 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 4340 OVERALL
OVERALL DIAMETER2.500 INCHES NOMINAL
THICKNESS0.200 INCHES MINIMUM AND 0.202 INCHES MAXIMUM


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