National Item Identification Number

00-489-8173
004898173
5365-00-489-8173
5365004898173

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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77237

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Reference Numbers (Part Numbers)

561088
561088
561088

Required Categories

MATERIAL
HARDNESS RATING
OVERALL THICKNESS
INSIDE DIAMETER
OUTSIDE DIAMETER;

Required Description

STEEL COMP 4130
28.0 ROCKWELL C MINIMUM AND
32.0 ROCKWELL C MAXIMUM
0.780 INC