National Item Identification Number

01-139-2898
011392898
5365-01-139-2898
5365011392898

National Stock Number

Item Name

SPACER,RING

Federal Supply Class

5365

Description

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.

Commercial and Government Entity Code (Supplier Data)

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21877

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NORTHROP GRUMMAN SYSTEMS CORPORATION
DBA NORTHROP GRMMAN NORDEN SYSTEMS
65 MARCUS DR
MELVILLE
NY
11747
631-719-4698

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53711

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Reference Numbers (Part Numbers)

143734
2885174
2885174

Required Categories

MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
SURFACE TREATMENT
SURFACE TREAT

Required Description

STEEL
ASTM A582,COND A ASSN STD SINGLE MATERIAL RESPONSE
PASSIVATE
QQ-P-35,TY