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National Stock Number:
4820-00-068-6564
Federal Supply Class:
4820
National Item Identification Number:
000686564
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:
| 114H6833-1 | 77272 | THE BOEING COMPANY |
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Techincal Specification:
| BODY INSIDE DIAMETER | 0.625 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 0.865 INCHES MINIMUM AND 0.870 INCHES MAXIMUM | | FLANGE DIAMETER | 1.053 INCHES MINIMUM AND 1.054 INCHES MAXIMUM | | FLANGE SEAT TO DISK END HEIGHT | 0.312 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 17-4PH OVERALL | | SEATING SURFACE SHAPE | FLAT | | SPECIAL FEATURES | FLANGE CENTER-GROOVED 0.141 IN. WIDE BY 0.878 IN. DIA,MAX SURFACE FINISH 125 MICROINCHES AA O/A | | STYLE DESIGNATOR | PLAIN FLANGED | | UNDER FLANGE HEIGHT | 0.187 INCHES NOMINAL |
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