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National Stock Number:
4820-00-397-9527
Federal Supply Class:
4820
National Item Identification Number:
003979527
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:
| 60645P20 | 80254 | TEXTRON LYCOMING INC WILLIAMSPORT PLANT | | 61258P20 | 80254 | TEXTRON LYCOMING INC WILLIAMSPORT PLANT |
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Techincal Specification:
| BODY INSIDE DIAMETER | 1.720 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 2.117 INCHES NOMINAL | | HARDNESS RATING | 80.0 ROCKWELL B MINIMUM AND 100.0 ROCKWELL B MAXIMUM OVERALL | | MATERIAL | COPPER ALLOY 614 OVERALL | | OVERALL HEIGHT | 0.409 INCHES MINIMUM AND 0.414 INCHES MAXIMUM | | SEAT RADIUS | 0.250 INCHES NOMINAL | | SEATING SURFACE SHAPE | RADIAL | | STYLE DESIGNATOR | PLAIN |
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