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		                             National Stock Number: 4820-00-394-7426
  Federal Supply Class: 4820
  National Item Identification Number: 003947426
  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:
 | STYLE DESIGNATOR | THREADED FLANGED |  | FLANGE DIAMETER | 1.188 INCHES NOMINAL |  | FLANGE SEAT TO DISK END HEIGHT | 0.125 INCHES NOMINAL |  | UNDER FLANGE HEIGHT | 0.312 INCHES NOMINAL |  | BODY STEPPED INSIDE DIAMETER | 0.750 INCHES NOMINAL FIRST STEP |   | 0.688 INCHES NOMINAL SECOND STEP |  | MATERIAL | NICKEL ALLOY OVERALL |  | SEATING SURFACE SHAPE | FLAT |  | THREAD SERIES DESIGNATOR | UNEF SINGLE THREADED PORTION |  | NOMINAL THREAD SIZE | 1.062 INCHES SINGLE THREADED PORTION |  | THREAD CLASS | 3A SINGLE THREADED PORTION |  | THREAD LENGTH | 0.312 INCHES NOMINAL SINGLE THREADED PORTION |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 70667 |  | DESIGN CONTROL REFERENCE | P550A |   
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