5340-00-136-0188 BUMPER,NONMETALLIC Index 5310-00-136-0193 WASHER,SPECIAL

National Stock Number:
5310-00-136-0191

Federal Supply Class:
5310

National Item Identification Number:
001360191

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:
57996-507-194756THE BOEING COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HEAT TREATMENTAS FABRICATED
HOLE DIAMETER0.149 INCHES MINIMUM AND 0.159 INCHES MAXIMUM
NUCLEAR HARDNESS CRITICAL FEATUREHARDENED
OVERALL DIAMETER0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
MATERIALSTEEL OVERALL
PERIPHERAL SHAPE STYLEROUND
SPECIAL FEATURESDESIGN ANALYSIS; NUCLEAR HARDNESS CRITICAL


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