5310-99-433-4299 WASHER,LOCK Index 5340-99-439-9252 PLATE,MOUNTING

National Stock Number:
5310-99-435-6653

Federal Supply Class:
5310

National Item Identification Number:
994356653

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:
015397K6111QIOPTIQ LIMITED


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.203 INCHES MINIMUM AND 0.210 INCHES MAXIMUM
LENGTH0.595 INCHES MINIMUM AND 0.605 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONBS 1449PART 4GRADE 302S25 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
PERIPHERAL SHAPE STYLERECTANGULAR
WIDTH ACROSS FLATS0.335 INCHES MINIMUM AND 0.345 INCHES MAXIMUM
THICKNESS0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM


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