5306-14-265-0567 BOLT,CLOSE TOLERANCE Index 5310-14-265-0630 WASHER,FLAT

National Stock Number:
5310-14-265-0628

Federal Supply Class:
5310

National Item Identification Number:
142650628

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:
23111DB040F0111BUREAU NORMALISATION AERONAUTIQUEESPACE
23111DB040F0188BLANC AERO INDUSTRIES - GROUPE LISIAEROSPACE
23111DB040F1236PREAULT TECHNOLOGIES
L23111-40DBF0111BUREAU NORMALISATION AERONAUTIQUEESPACE
L23111-40DBKCF40ANIXTER LTD


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER4.25 MILLIMETERS MINIMUM AND 4.43 MILLIMETERS MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONF0111 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY A-G5 OVERALL
III HEAT TREATMENTF-AS FABRICATED
III MINIMUM TENSILE STRENGTH280 NEWTONS PER SQUARE MILLIMETER
III MINIMUM YIELD STRENGTH140 NEWTONS PER SQUARE MILLIMETER
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER8.0 MILLIMETERS NOMINAL
THICKNESS0.8 MILLIMETERS NOMINAL


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