5310-12-355-8301 WASHER,LOCK Index 5330-12-355-8441 GASKET

National Stock Number:
5310-12-355-8440

Federal Supply Class:
5310

National Item Identification Number:
123558440

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:
937893D9913GENERAL DYNAMICS EUROPEAN LAND SYSTEMS-BRIDGE SYSTEMS GMBH


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING140,0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 250,0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM
HOLE DIAMETER8,4 MILLIMETERS NOMINAL
MATERIALSTEEL OVERALL
PERIPHERAL SHAPE STYLEROUND
OUTSIDE LEFT CORNER CHAMFER ANGLE30,0 DEGREES MINIMUM AND 45,0 DEGREES MAXIMUM
OVERALL DIAMETER16,0 MILLIMETERS NOMINAL
SPECIFICATION/STANDARD DATAD8286-DIN125/JUL88/ERSETZT/ PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONDNC450 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTGESAMTARTIKEL NICKEL-PHOSPHORLEGIERUNG OVERALL
THICKNESS1,6 MILLIMETERS NOMINAL


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