5340-00-045-4079 BUTTON,PLUG Index 2520-00-045-4082 RING

National Stock Number:
5365-00-045-4081

Federal Supply Class:
5365

National Item Identification Number:
000454081

Description:
SPACER,RING

Detail:
A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see GASKET. For items manufactured from lubricated plastics, see BEARING, WASHER, THRUST. For items manufactured from lubricated felt, see FELT, MECHANICAL, PREFORMED. Excludes DISK, VALVE; INSULATOR WASHER; and SHIM. See also SPACER, PLATE and SPACER, SLEEVE.


Manufacturer Information:
A02R2878-177272THE BOEING COMPANY
A02R2878-181205THE BOEING COMPANY


Techincal Specification:
INSIDE DIAMETER3.563 INCHES NOMINAL
OUTSIDE DIAMETER4.125 INCHES NOMINAL
OVERALL THICKNESS0.230 INCHES NOMINAL
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE


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