4320-00-633-5977 SEAL ASSEMBLY,PLAIN Index 4820-00-633-5980 DISK,VALVE

National Stock Number:
4820-00-633-5979

Federal Supply Class:
4820

National Item Identification Number:
006335979

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.


Manufacturer Information:
8962238056ASHCROFT INC


Techincal Specification:
BODY STEPPED INSIDE DIAMETER1.156 INCHES NOMINAL THIRD STEP
BODY STEPPED INSIDE DIAMETER1.125 INCHES MINIMUM AND 1.130 INCHES MAXIMUM SECOND STEP
BODY STEPPED INSIDE DIAMETER1.326 INCHES MINIMUM AND 1.330 INCHES MAXIMUM FIRST STEP
BODY STEPPED INSIDE DIAMETER1.500 INCHES NOMINAL FOURTH STEP
FLANGE DIAMETER3.750 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT0.688 INCHES NOMINAL
OVERALL HEIGHT1.376 INCHES NOMINAL
MATERIALSTEEL COMP 347 OVERALL
NOMINAL THREAD SIZE1.688 INCHES FIRST THREADED PORTION
NOMINAL THREAD SIZE1.875 INCHES SECOND THREADED PORTION
SEATING SURFACE SHAPEFLAT
STYLE DESIGNATORDOUBLE FLANGED
THREAD CLASS3A FIRST THREADED PORTION
THREAD CLASS3A SECOND THREADED PORTION
THREAD LENGTH0.688 INCHES NOMINAL FIRST THREADED PORTION
THREAD LENGTH0.688 INCHES NOMINAL SECOND THREADED PORTION
THREAD SERIES DESIGNATORUNS SECOND THREADED PORTION
THREAD QUANTITY PER INCH14 SECOND THREADED PORTION
THREAD QUANTITY PER INCH16 FIRST THREADED PORTION
THREAD SERIES DESIGNATORUN FIRST THREADED PORTION
UNDER FLANGE HEIGHT4.312 INCHES NOMINAL


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