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National Stock Number:
4820-00-654-3715
Federal Supply Class:
4820
National Item Identification Number:
006543715
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:
| 658328 | 81982 | HYDRO-AIRE AEROSPACE CORP |
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Techincal Specification:
| BODY INSIDE DIAMETER | 0.967 INCHES MINIMUM AND 0.972 INCHES MAXIMUM | | BODY OUTSIDE DIAMETER | 1.064 INCHES MINIMUM AND 1.065 INCHES MAXIMUM | | FLANGE DIAMETER | 1.165 INCHES MINIMUM AND 1.175 INCHES MAXIMUM | | FLANGE SEAT TO DISK END HEIGHT | 0.060 INCHES NOMINAL | | HARDNESS RATING | 20.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM OVERALL | | MATERIAL | STEEL COMP 416 OVERALL | | SEAT ANGLE IN DEG | 15.000 NOMINAL | | SEATING SURFACE SHAPE | ANGULAR | | STYLE DESIGNATOR | PLAIN FLANGED | | SURFACE TREATMENT | PASSIVATE OVERALL | | UNDER FLANGE HEIGHT | 0.215 INCHES MINIMUM AND 0.220 INCHES MAXIMUM |
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