5310-01-579-3906 NUT,PLAIN,HEXAGON Index 5310-01-579-3972 WASHER,FLAT

National Stock Number:
5310-01-579-3911

Federal Supply Class:
5310

National Item Identification Number:
015793911

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:
64375506W728BAE SYSTEMS SURVIVABILITY SYSTEMS LLC
6437550-05M1076M6BAE SYSTEMS LAND & ARMAMENTS L.P.
6437550-05M111083CATERPILLAR INC
6437550-05M154786BAE SYSTEMS LAND & ARMAMENTS L.P.
6437550-05M16TD24O'GARA-HESS & EISENHARDT ARMORING COMPANY LLC
6437550-05M16W728BAE SYSTEMS SURVIVABILITY SYSTEMS LLC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.563 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM F436, TABLE 1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
III PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, FLAT ROUND STEEL HARDENED
PERIPHERAL SHAPE STYLEROUND
PROPRIETARY CHARACTERISTICSPACS
OVERALL DIAMETER1.375 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONSAE-AMS2434 ASSN STD ALL TREATMENT RESPONSES OVERALL AND WSS -1+95 A-4 MFR REF ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENTTIN OVERALL AND ZINC OVERALL
THICKNESS0.097 INCHES MINIMUM AND 0.177 INCHES MAXIMUM


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