5998-00-945-8143 CIRCUIT CARD ASSEMBLY Index 1560-00-945-8145 BULKHEAD,TANK-PYLON

National Stock Number:
5365-00-945-8144

Federal Supply Class:
5365

National Item Identification Number:
009458144

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:
369A516102731MCDONNELL DOUGLAS HELICOPTER CO INC
369A51611KVX4MD HELICOPTERS INC


Techincal Specification:
INSIDE DIAMETER2.530 INCHES NOMINAL
OUTSIDE DIAMETER2.820 INCHES MINIMUM AND
2.830 INCHES MAXIMUM
MATERIALSTEEL COMP 1213
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-637,COMP B1113 FED SPEC SINGLE MATERIAL RESPONSE
SURFACE FINISH125.0 MICROINCHES LARGEST OUTSIDE DIAMETER
125.0 MICROINCHES LEFT SIDE
125.0 MICROINCHES RIGHT SIDE
125.0 MICROINCHES BORE


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