5310-01-133-4870 WASHER,FLAT Index 5310-01-133-4872 WASHER,FLAT

National Stock Number:
5310-01-133-4871

Federal Supply Class:
5310

National Item Identification Number:
011334871

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:
1000B40445M0TF60KNIGHT AEROSPACE PRODUCTS, INC.
1000B40445M54932PAGE AVJET SUPPORT EQUIPMENT CORP
91128A03139428MCMASTER-CARR SUPPLY CO


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.437 INCHES NOMINAL
MATERIALSTEEL COMP M1020 OVERALL
PERIPHERAL SHAPE STYLESQUARE
WIDTH ACROSS FLATS2.000 INCHES NOMINAL
THICKNESS0.250 INCHES NOMINAL


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