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National Stock Number:
5365-01-272-3408
Federal Supply Class:
5365
National Item Identification Number:
012723408
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:
| K622020-21 | 84955 | KAMAN AEROSPACE CORPORATION |
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Techincal Specification:
| HARDNESS RATING | 27.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM | | INSIDE DIAMETER | 0.5640 INCHES MINIMUM AND 0.5645 INCHES MAXIMUM | | OUTSIDE DIAMETER | 0.6881 INCHES MINIMUM AND 0.6892 INCHES MAXIMUM | | OVERALL THICKNESS | 0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | STEEL COMP 4130 | | SPECIAL FEATURES | INSIDE LEFT AND RIGHT CORNERS OF THE BORE CHAMFERED 0.025 IN. MIN 0.035 IN. MAX BY 45.0 DEG | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE | | SURFACE TREATMENT | CADMIUM AND CHROMATE |
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