9390-01-020-3394 NONMETALLIC SPECIAL SHAPED SECTI Index 4820-01-020-3396 SEAT,VALVE

National Stock Number:
4820-01-020-3395

Federal Supply Class:
4820

National Item Identification Number:
010203395

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:
73720410001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER


Techincal Specification:
BODY STEPPED INSIDE DIAMETER0.125 INCHES NOMINAL FIRST STEP
BODY STEPPED INSIDE DIAMETER0.281 INCHES NOMINAL SECOND STEP
CRITICALITY CODE JUSTIFICATIONFEAT
FLANGE SEAT TO DISK END HEIGHT0.344 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,TYPE 1,ALLOY X6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY OVERALL
NOMINAL THREAD SIZE0.562 INCHES SINGLE THREADED PORTION
SEATING SURFACE SHAPEANGULAR
SPECIAL FEATURESTESTED IAW MIL-M-19595
STYLE DESIGNATORTHREADED FLANGED
THREAD CLASS3A SINGLE THREADED PORTION
THREAD LENGTH0.281 INCHES NOMINAL SINGLE THREADED PORTION
THREAD SERIES DESIGNATORUNF SINGLE THREADED PORTION
UNDER FLANGE HEIGHT0.562 INCHES NOMINAL


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