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National Stock Number:
5365-00-475-8250
Federal Supply Class:
5365
National Item Identification Number:
004758250
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.
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Manufacturer Information:
| 143908-300S320-063 | 18355 | THE BOEING COMPANY | | 143908-300S320-063 | 88277 | THE BOEING COMPANY |
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Techincal Specification:
| INSIDE DIAMETER | 2.995 INCHES MINIMUM AND 3.015 INCHES MAXIMUM | | OUTSIDE DIAMETER | 3.620 INCHES MINIMUM AND 3.640 INCHES MAXIMUM | | OVERALL THICKNESS | 0.063 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | STEEL COMP 4130 | | SURFACE TREATMENT | CADMIUM |
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