4920-01-479-4540 HEATER,AIRCRAFT ENGINE MAINTENAN Index 4720-01-479-4542 HOSE,AIR DUCT

National Stock Number:
5365-01-479-4541

Federal Supply Class:
5365

National Item Identification Number:
014794541

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:
17P2A3502-1188277THE BOEING COMPANY


Techincal Specification:
FSC APPLICATION DATAWASHER,FLAT
INSIDE DIAMETER0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM
OUTSIDE DIAMETER0.750 INCHES NOMINAL
OVERALL THICKNESS0.225 INCHES MINIMUM AND 0.245 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/2024-T3 FED SPEC SINGLE MATERIAL RESPONSE
MATERIALALUMINUM ALLOY 1230 OR ALUMINUM ALLOY 2024
SPECIAL FEATURESWASHER WAS ALTERED NOW A SPACER


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