5310-12-349-0711 NUT,PLAIN,HEXAGON Index 5975-12-349-0810 STRAP,TIE DOWN,ELECTRICAL COMPON

National Stock Number:
5310-12-349-0725

Federal Supply Class:
5310

National Item Identification Number:
123490725

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:
DIN6340-31-A2AD8286DIN DEUTSCHES INSTITUT FUER NORMUNGEV
DIN6340-31-A3PD8286DIN DEUTSCHES INSTITUT FUER NORMUNGEV


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
FEATURES PROVIDEDCASEHARDENED
HARDNESS RATING390,0 VICKERS OR FIRTH DIAMOND PYRAMID NOMINAL
HOLE DIAMETER31,0 MILLIMETERS NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONDIN17200 ASSN STD SINGLE MATERIAL RESPONSE
MATERIALSTEEL COMP 1.0501
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER68,0 MILLIMETERS NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONDIN267/9, SCHLUESSEL A3P ASSN STD SINGLE TREATMENT RESPONSE
SURFACE TREATMENTZINC AND CHROMATE
TEST DATA DOCUMENTD8286-DIN6340/APR87/ STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
THICKNESS10,0 MILLIMETERS NOMINAL


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