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National Stock Number:
5365-00-944-1455
Federal Supply Class:
5365
National Item Identification Number:
009441455
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:
| 65103-11025-101 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM | | INSIDE DIAMETER | 3.270 INCHES MINIMUM AND 3.280 INCHES MAXIMUM | | OUTSIDE DIAMETER | 3.750 INCHES NOMINAL | | OVERALL THICKNESS | 0.153 INCHES MINIMUM AND 0.156 INCHES MAXIMUM | | MATERIAL | STEEL CORROSION RESISTING | | SPECIAL FEATURES | TWO FLATS ON ID 180 DEGREES APART 3.125 IN. ACROSS FLATS | | SURFACE FINISH | 90.0 MICROINCHES LARGEST OUTSIDE DIAMETER | | SURFACE FINISH | 90.0 MICROINCHES LEFT SIDE | | SURFACE FINISH | 90.0 MICROINCHES BORE | | SURFACE FINISH | 90.0 MICROINCHES RIGHT SIDE | | SURFACE TREATMENT | PHOSPHATE |
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