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		                             National Stock Number: 4810-00-168-8748
  Federal Supply Class: 4810
  National Item Identification Number: 001688748
  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:
 | 150-570GPC225 | 27235 | HARDIE-TYNES CO., INC. |  | 150-570HPC225 | 27235 | HARDIE-TYNES CO., INC. |  | 150-570KPC225 | 27235 | HARDIE-TYNES CO., INC. |  | 150-570PC225 | 27235 | HARDIE-TYNES CO., INC. |  | 150-570YPC225 | 27235 | HARDIE-TYNES CO., INC. |  | 150-589PC225 | 27235 | HARDIE-TYNES CO., INC. |  | 30-225 | 27235 | HARDIE-TYNES CO., INC. |   
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  Techincal Specification:
 | STYLE DESIGNATOR | THREADED FLANGED |  | FLANGE DIAMETER | 1.875 INCHES NOMINAL |  | BODY INSIDE DIAMETER | 0.937 INCHES NOMINAL |  | FLANGE SEAT TO DISK END HEIGHT | 0.328 INCHES NOMINAL |  | UNDER FLANGE HEIGHT | 0.266 INCHES NOMINAL |  | MATERIAL | STEEL CORROSION RESISTING OVERALL |  | SURFACE TREATMENT | PASSIVATE OVERALL |  | SEATING SURFACE SHAPE | FLAT |  | SEAL ACCOMMODATION TYPE | RECESSED |  | THREAD SERIES DESIGNATOR | UN SINGLE THREADED PORTION |  | NOMINAL THREAD SIZE | 1.562 INCHES SINGLE THREADED PORTION |  | THREAD QUANTITY PER INCH | 20 SINGLE THREADED PORTION |  | THREAD CLASS | 2A SINGLE THREADED PORTION |  | THREAD LENGTH | 0.188 INCHES NOMINAL SINGLE THREADED PORTION |  | SPECIAL FEATURES | WITH 8 THROUGH HOLES,0.250 IN. ID,EQUALLY SPACED ON 0.781 IN. B.C. DIA |   
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