9390-00-055-9203 NONMETALLIC SPECIAL SHAPED SECTI Index 4820-00-055-9205 VALVE,BUTTERFLY

National Stock Number:
5310-00-055-9204

Federal Supply Class:
5310

National Item Identification Number:
000559204

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:
1011024205716RAYTHEON COMPANY
1011024218876U S ARMY AVIATION AND MISSILE COMMAND
1011024249956RAYTHEON COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.390 INCHES MINIMUM AND 0.422 INCHES MAXIMUM
OVERALL DIAMETER0.734 INCHES MINIMUM AND 0.766 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 302 OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.016 INCHES MINIMUM AND 0.020 INCHES MAXIMUM


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