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National Stock Number:
5365-99-051-4376
Federal Supply Class:
5365
National Item Identification Number:
990514376
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:
| B508819 | K0378 | ROLLS-ROYCE PLC |
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Techincal Specification:
| CRITICALITY CODE JUSTIFICATION | ABHE AND ADUM | | HARDNESS RATING | 300.0 VICKERS MINIMUM AND 350.0 VICKERS MAXIMUM | | INSIDE DIAMETER | 8.010 INCHES MINIMUM AND 8.020 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MSRR6503 MFR REF SINGLE MATERIAL RESPONSE | | MATERIAL | STEEL | | OUTSIDE DIAMETER | 8.4225 INCHES MINIMUM AND 8.4275 INCHES MAXIMUM | | OVERALL THICKNESS | 0.09125 INCHES MINIMUM AND 0.09175 INCHES MAXIMUM | | SPECIAL FEATURES | ROUND HOLE; 0.065IN. LG BY 45 DEG ANGLE CHAMFER ONE OUTSIDE EDGE | | SURFACE FINISH | 125.000 MICROINCHES BORE | | SURFACE FINISH | 32.000 MICROINCHES LEFT SIDE | | SURFACE FINISH | 32.000 MICROINCHES RIGHT SIDE |
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