5310-00-401-1966 NUT,SELF-LOCKING,HEXAGON Index 5310-00-401-1968 WASHER,FLAT

National Stock Number:
5310-00-401-1967

Federal Supply Class:
5310

National Item Identification Number:
004011967

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:
AN961-105D9182ZF INDUSTRIEANTRIEBE WITTEN GMBH
AN961-10S0PXV4THE BOEING COMPANY
NASM9616U503LIBERTY FASTENER CO
AN961-10S76301THE BOEING COMPANY
AN961-10S88044AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM
OVERALL DIAMETER0.433 INCHES MINIMUM AND 0.458 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626 1/2 HARD FED SPEC 1ST MATERIAL RESPONSE OR QQ-W-321 1/2 HARD FED SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY 268 OR COPPER ALLOY 270 OVERALL
PERIPHERAL SHAPE STYLEROUND
PRECIOUS MATERIAL AND LOCATIONOVER SILVER
PRECIOUS MATERIALSILVER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTSILVER OVERALL
THICKNESS0.022 INCHES MINIMUM AND 0.042 INCHES MAXIMUM


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