5310-01-566-5211 WASHER,FLAT Index 5310-01-566-5289 NUT,SELF-LOCKING,HEXAGON

National Stock Number:
5310-01-566-5242

Federal Supply Class:
5310

National Item Identification Number:
015665242

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:
6340H SIZE 615526METRIC AND MULTISTANDARD COMPONENTS CORP
98-1975930554DEPARTMENT OF DEFENSE PROJECT MANAGER-MOBILE ELECTRIC POWER


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
COLORBLACK OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER6.4 MILLIMETERS MINIMUM AND 6.8 MILLIMETERS MAXIMUM
OVERALL DIAMETER16.3 MILLIMETERS MINIMUM AND 17.0 MILLIMETERS MAXIMUM
MATERIALSTEEL OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, FLAT HARDENED THRUST
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTOXIDE OVERALL
THICKNESS2.7 MILLIMETERS MINIMUM AND 3.3 MILLIMETERS MAXIMUM


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