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		                             National Stock Number: 4820-00-691-1104
  Federal Supply Class: 4820
  National Item Identification Number: 006911104
  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:
 | 24-D-46134 | 50024 | COLTEC INDUSTRIES INC DBA FAIRBANKS MORSE ENGINE FM/ALCO |  | 32421A | 50024 | COLTEC INDUSTRIES INC DBA FAIRBANKS MORSE ENGINE FM/ALCO |  | 32421A | 7PZX0 | FAIRBANKS MORSE, LLC |  | BB61S61-0891PC23 | 80064 | NAVAL SHIP SYSTEMS COMMAND |   
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  Techincal Specification:
 | BODY INSIDE DIAMETER | 1.574 INCHES MINIMUM AND 1.578 INCHES MAXIMUM |  | OVERALL HEIGHT | 0.625 INCHES NOMINAL |  | MATERIAL | STEEL OVERALL |  | NOMINAL THREAD SIZE | 0.250 INCHES SINGLE THREADED PORTION |  | SEAT ANGLE IN DEG | 45.000 NOMINAL |  | SEATING SURFACE SHAPE | ANGULAR |  | STYLE DESIGNATOR | PLAIN THREADED |  | THREAD LENGTH | 0.188 INCHES NOMINAL SINGLE THREADED PORTION |  | THREAD CLASS | 3A SINGLE THREADED PORTION |  | THREAD SERIES DESIGNATOR | UNC SINGLE THREADED PORTION |   
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