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		                        | National Stock Number:
 4820-01-063-1856
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 010631856
 
 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:
 
 | 1385637-08X-08 | 80064 | NAVAL SHIP SYSTEMS COMMAND |  | 803-1385637 | 80064 | NAVAL SHIP SYSTEMS COMMAND | 
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 Techincal Specification:
 
 | BODY INSIDE DIAMETER | 7.937 INCHES NOMINAL |  | FLANGE DIAMETER | 9.125 INCHES NOMINAL |  | FLANGE SEAT TO DISK END HEIGHT | 0.343 INCHES NOMINAL |  | NOMINAL THREAD SIZE | 8.687 INCHES SINGLE THREADED PORTION |  | MATERIAL | NICKEL ALLOY OVERALL |  | SEATING SURFACE SHAPE | FLAT |  | STYLE DESIGNATOR | THREADED FLANGED |  | THREAD CLASS | 2A SINGLE THREADED PORTION |  | THREAD LENGTH | 1.093 INCHES NOMINAL SINGLE THREADED PORTION |  | THREAD SERIES DESIGNATOR | UNF SINGLE THREADED PORTION |  | UNDER FLANGE HEIGHT | 0.750 INCHES NOMINAL | 
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