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National Stock Number:
5365-00-191-4910
Federal Supply Class:
5365
National Item Identification Number:
001914910
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:
| 4G53922-101A | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM | | INSIDE DIAMETER | 3.515 INCHES NOMINAL | | OUTSIDE DIAMETER | 3.800 INCHES MINIMUM AND 4.000 INCHES MAXIMUM | | OVERALL THICKNESS | 0.344 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5612 ASSN STD SINGLE MATERIAL RESPONSE OR SAE MOD ASSN STD SINGLE MATERIAL RESPONSE | | MATERIAL | STEEL COMP 410 | | SURFACE FINISH | 125.0 MICROINCHES BORE | | SURFACE FINISH | 125.0 MICROINCHES LARGEST OUTSIDE DIAMETER | | SURFACE FINISH | 125.0 MICROINCHES LEFT SIDE | | SURFACE FINISH | 125.0 MICROINCHES RIGHT SIDE | | SURFACE TREATMENT | PASSIVATE |
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