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National Stock Number:
5365-99-840-1185
Federal Supply Class:
5365
National Item Identification Number:
998401185
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:
| B508822 | K0378 | ROLLS-ROYCE PLC |
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Techincal Specification:
| DIAMETER | 8.010 INCHES MINIMUM AND 8.020 INCHES MAXIMUM | | CASEHARDENING INDICATOR | NOT CASEHARDENED | | CRITICALITY CODE JUSTIFICATION | ABKV AND BZLW | | HOLE SHAPE | ROUND | | INSIDE DIAMETER | 8.010 INCHES MINIMUM AND 8.020 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MSRR 6503 MFR REF SINGLE MATERIAL RESPONSE | | MATERIAL HARDNESS RATING | 300.0 VICKERS MINIMUM AND 350.0 VICKERS MAXIMUM | | MATERIAL | STEEL | | OUTSIDE DIAMETER | 8.4225 INCHES MINIMUM AND 8.4275 INCHES MAXIMUM | | OUTSIDE DIAMETER | 8.4225 INCHES MINIMUM AND 8.4275 INCHES MAXIMUM | | OUTSIDE THICKNESS | 0.09575 INCHES MINIMUM AND 0.09625 INCHES MAXIMUM | | OVERALL THICKNESS | 0.09575 INCHES MINIMUM AND 0.09625 INCHES MAXIMUM | | SPECIAL FEATURES | 300 MIN,350 MAX VICKERS HARDNESS TEST | | SURFACE FINISH AND LOCATION | 32.0 MICROINCHES LEFT SIDE AND 32.0 MICROINCHES RIGHT SIDE AND 125.0 MICROINCHES BORE | | SURFACE FINISH | 125.0 MICROINCHES BORE | | SURFACE FINISH | 32.0 MICROINCHES LEFT SIDE | | SURFACE FINISH | 32.0 MICROINCHES RIGHT SIDE |
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