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		                             National Stock Number: 4820-00-368-9510
  Federal Supply Class: 4820
  National Item Identification Number: 003689510
  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:
 | 28485 | 99643 | EATON AEROSPACE LLC |   
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  Techincal Specification:
 | MATERIAL | STEEL OVERALL |  | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |  | SURFACE TREATMENT | PASSIVATE OVERALL |  | SEATING SURFACE SHAPE | FLAT |  | THREAD SERIES DESIGNATOR | UNEF SINGLE THREADED PORTION |  | THREAD CLASS | 2A SINGLE THREADED PORTION |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 99643 |  | DESIGN CONTROL REFERENCE | 28485 |   
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