1560-01-488-1419 FITTING,STRUCTURAL COMPONENT,AIR Index 1560-01-488-1421 HINGE,AIRCRAFT

National Stock Number:
5310-01-488-1420

Federal Supply Class:
5310

National Item Identification Number:
014881420

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:
5HB71201-10981205THE BOEING COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER1.770 INCHES NOMINAL
III PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER
PERIPHERAL SHAPE STYLEDEE
PROPRIETARY CHARACTERISTICSPACS
OVERALL DIAMETER2.500 INCHES NOMINAL


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