5305-00-061-7977 SCREW,TAPPING Index 5365-00-061-7982 SPACER,RING

National Stock Number:
5365-00-061-7979

Federal Supply Class:
5365

National Item Identification Number:
000617979

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:
C90742-1780020NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION CODE 4.8.8.0.0.B BLDG 148-2


Techincal Specification:
INSIDE DIAMETER3.075 INCHES MINIMUM AND 3.985 INCHES MAXIMUM
OUTSIDE DIAMETER4.500 INCHES NOMINAL
OVERALL THICKNESS0.385 INCHES MINIMUM AND 0.390 INCHES MAXIMUM
MATERIALSTEEL CORROSION RESISTING
SURFACE TREATMENTCADMIUM


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