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National Stock Number:
4820-00-055-1456
Federal Supply Class:
4820
National Item Identification Number:
000551456
Description:
SEAT,VALVE
Detail:
A replaceable item designed to provide a circular stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see INSERT, ENGINE VALVE SEAT.
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Manufacturer Information:
| 20457 | 99643 | EATON AEROSPACE LLC |
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Techincal Specification:
| BODY OUTSIDE DIAMETER | 0.264 INCHES NOMINAL | | BODY STEPPED INSIDE DIAMETER | 0.030 INCHES NOMINAL THIRD STEP | | BODY STEPPED INSIDE DIAMETER | 0.156 INCHES NOMINAL SECOND STEP | | FLANGE DIAMETER | 0.374 INCHES NOMINAL | | FLANGE SEAT TO DISK END HEIGHT | 0.097 INCHES NOMINAL | | HARDNESS RATING | 55.0 ROCKWELL C MINIMUM OVERALL AND 60.0 ROCKWELL C MAXIMUM OVERALL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | PROPRIETARY CHARACTERISTICS | PACS | | SEATING SURFACE SHAPE | FLAT | | STYLE DESIGNATOR | PLAIN FLANGED | | UNDER FLANGE HEIGHT | 0.083 INCHES NOMINAL |
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