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National Stock Number:
5365-00-807-9981
Federal Supply Class:
5365
National Item Identification Number:
008079981
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:
| 903894-1 | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| OVERALL THICKNESS | 0.248 INCHES MINIMUM AND | | 0.253 INCHES MAXIMUM | | INSIDE DIAMETER | 4.004 INCHES MINIMUM AND | | 4.006 INCHES MAXIMUM | | OUTSIDE DIAMETER | 4.360 INCHES MINIMUM AND | | 4.364 INCHES MAXIMUM | | MATERIAL | ALUMINUM ALLOY 2024 | | MATERIAL DOCUMENT AND CLASSIFICATION | WW-T-700/3 T3,TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE | | SURFACE TREATMENT | ANODIZE | | SURFACE FINISH | 125.0 MICROINCHES LARGEST OUTSIDE DIAMETER | | 63.0 MICROINCHES LEFT SIDE | | 63.0 MICROINCHES RIGHT SIDE | | 125.0 MICROINCHES BORE | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 98897 | | DESIGN CONTROL REFERENCE | 903894-1 |
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