2940-00-850-3996 TRAP,BACKFIRE,AIR Index 5310-00-850-3998 WASHER,FLAT

National Stock Number:
5365-00-850-3997

Federal Supply Class:
5365

National Item Identification Number:
008503997

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:
1088987619207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
5365008503997A00AME.C.A ETABLISSEMENT CENTRAL DESAPPROVISIONNEMENTS DES FORCES ARMEE
5365008503997SCY13E.C.A ETABLISSEMENT CENTRALD'APPROVISIONNEMENT DES FORCES ARMEE


Techincal Specification:
FEATURES PROVIDEDCASEHARDENED
INSIDE DIAMETER0.800 INCHES NOMINAL
OUTSIDE DIAMETER0.980 INCHES NOMINAL
OVERALL THICKNESS0.178 INCHES MINIMUM AND 0.182 INCHES MAXIMUM
MATERIALSTEEL CORROSION RESISTING
SURFACE FINISH63.0 MICROINCHES OVERALL


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