3040-00-469-0939 RING FOLLOWER ASSY Index 3040-00-469-0941 HEADER RING

National Stock Number:
5365-00-469-0940

Federal Supply Class:
5365

National Item Identification Number:
004690940

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:
776-482PCA381316PORTSMOUTH NAVAL SHIPYARD


Techincal Specification:
HARDNESS RATING57.0 ROCKWELL B MINIMUM AND 74.0 ROCKWELL B MAXIMUM
INSIDE DIAMETER12.768 INCHES MINIMUM AND 12.773 INCHES MAXIMUM
OUTSIDE DIAMETER14.240 INCHES MINIMUM AND 14.245 INCHES MAXIMUM
OVERALL THICKNESS0.187 INCHES NOMINAL
MATERIALCOPPER ALLOY


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