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		                        | National Stock Number:
 4820-00-620-8515
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 006208515
 
 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:
 
 | FLANGE DIAMETER | 5.187 INCHES NOMINAL |  | BODY INSIDE DIAMETER | 4.375 INCHES NOMINAL |  | UNDER FLANGE HEIGHT | 1.750 INCHES NOMINAL |  | MATERIAL | STEEL COMP 414 OVERALL |  | SEATING SURFACE SHAPE | FLAT |  | THREAD SERIES DESIGNATOR | UNS SINGLE THREADED PORTION |  | NOMINAL THREAD SIZE | 5.187 INCHES SINGLE THREADED PORTION |  | THREAD QUANTITY PER INCH | 18 SINGLE THREADED PORTION |  | THREAD CLASS | 2A SINGLE THREADED PORTION |  | THREAD LENGTH | 0.750 INCHES NOMINAL SINGLE THREADED PORTION | 
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