4720-99-738-3557 HOSE ASSEMBLY,AIR DUCT,AIR BREAT Index 2815-99-738-3837 VALVE,SPECIAL

National Stock Number:
5310-99-738-3663

Federal Supply Class:
5310

National Item Identification Number:
997383663

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:
1403-0001K7599J.C. BAMFORD EXCAVATORS LIMITED


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER9.98 MILLIMETERS MINIMUM AND 10.10 MILLIMETERS MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONBS 1470 S1C CONDITION O NATIONAL SPEC SINGLE MATERIAL RESPONSE
MATERIALALUMINUM
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER17.50 MILLIMETERS MINIMUM AND 17.80 MILLIMETERS MAXIMUM
THICKNESS3.20 MILLIMETERS NOMINAL


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