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National Stock Number:
4820-00-404-5359
Federal Supply Class:
4820
National Item Identification Number:
004045359
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:
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Techincal Specification:
| FLANGE DIAMETER | 0.748 INCHES MINIMUM AND | | 0.749 INCHES MAXIMUM | | BODY OUTSIDE DIAMETER | 0.561 INCHES MINIMUM AND | | 0.563 INCHES MAXIMUM | | BODY INSIDE DIAMETER | 0.343 INCHES MINIMUM AND | | 0.344 INCHES MAXIMUM | | FLANGE SEAT TO DISK END HEIGHT | 0.096 INCHES MINIMUM AND | | 0.102 INCHES MAXIMUM | | UNDER FLANGE HEIGHT | 0.332 INCHES MINIMUM AND | | 0.344 INCHES MAXIMUM | | MATERIAL | ALUMINUM ALLOY 2024 OVERALL | | SURFACE TREATMENT | ALUMINUM OVERALL | | SEATING SURFACE SHAPE | ANGULAR | | SEAT ANGLE IN DEG | 30.000 NOMINAL | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 00021 | | DESIGN CONTROL REFERENCE | 8756 |
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