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National Stock Number:
5365-01-215-7725
Federal Supply Class:
5365
National Item Identification Number:
012157725
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:
| 137357 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | 2640-357X2 PIECE 22 | 8R230 | ESTA PRODUCTS COMPANY | | 2640-357X2 PIECE 22 | 96169 | ELECTRIC BOAT CORPORATION | | SS-845-2050895 PIECE 22 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| OUTSIDE DIAMETER | 3.245 INCHES MINIMUM AND 3.247 INCHES MAXIMUM | | OVERALL THICKNESS | 0.641 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-B-21230 MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | COPPER ALLOY 955 |
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