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National Stock Number:
5365-01-396-4713
Federal Supply Class:
5365
National Item Identification Number:
013964713
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:
| 221B1742P1 | 99971 | LOCKHEED MARTIN CORP NAVAL ELECTRONICS & SURVEILLANCE SYSTEMS |
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Techincal Specification:
| OUTSIDE DIAMETER | 3.333 INCHES MINIMUM AND 3.340 INCHES MAXIMUM | | OVERALL THICKNESS | 0.304 INCHES MINIMUM AND 0.314 INCHES MAXIMUM | | SPECIAL FEATURES | SPACER HAS FLANGE 0.100 INCH THICK AND 3.456 INCHES DIAMETER | | SURFACE FINISH | 125.0 MICROINCHES OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-F-14072,E300 MIL SPEC SINGLE TREATMENT RESPONSE | | SURFACE TREATMENT | PASSIVATE | | INSIDE DIAMETER | 3.251 INCHES MINIMUM AND 3.253 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582,S30300,COND A ASSN STD SINGLE MATERIAL RESPONSE | | MATERIAL | STEEL COMP 303 | | PROPRIETARY CHARACTERISTICS | PACS |
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