5310-01-172-2054 WASHER,FLAT Index 5310-01-172-2056 WASHER,FLAT

National Stock Number:
5310-01-172-2055

Federal Supply Class:
5310

National Item Identification Number:
011722055

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:
75A427231-2001K0289BRITISH AEROSPACE MILITARY AIRCRAFT & AEROSTRUCTURES
75A427231-2001K1987BAE SYSTEMS PLC
75A427231-2001U9143BAE SYSTEMS (OPERATIONS) LIMITED


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.266 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONBS1449.S07-1008 10G NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY OVERALL
PERIPHERAL SHAPE STYLEDEE
PROPRIETARY CHARACTERISTICSPACS
OVERALL DIAMETER0.560 INCHES NOMINAL
SPECIAL FEATURESRADIUS 0.125 IN. CENTERLINE TO OUTSIDE EDGE
WIDTH0.530 INCHES NOMINAL


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