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		                             National Stock Number: 4820-01-029-9974
  Federal Supply Class: 4820
  National Item Identification Number: 010299974
  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:
 | 003009G73-1 | 0BR59 | SIEMENS GOVERNMENT TECHNOLOGIES, INC. |  | 3009G73 PIECE 1 | 01289 | GENERAL ELECTRIC COMPANY |  | 3009G73-001 | 01289 | GENERAL ELECTRIC COMPANY |  | 781E733P41 | 01289 | GENERAL ELECTRIC COMPANY |  | 6021328-001 | 0BR59 | SIEMENS GOVERNMENT TECHNOLOGIES, INC. |  | 6021328-001 | 830Q4 | CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION |   
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  Techincal Specification:
 | STYLE DESIGNATOR | PLAIN FLANGED |  | FLANGE DIAMETER | 4.125 INCHES MINIMUM AND |   | 4.126 INCHES MAXIMUM |  | BODY OUTSIDE DIAMETER | 3.180 INCHES NOMINAL |  | BODY INSIDE DIAMETER | 1.500 INCHES MINIMUM AND |   | 1.510 INCHES MAXIMUM |  | FLANGE SEAT TO DISK END HEIGHT | 1.855 INCHES MINIMUM AND |   | 1.865 INCHES MAXIMUM |  | UNDER FLANGE HEIGHT | 1.720 INCHES NOMINAL |  | MATERIAL | STEEL OVERALL |  | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,CL 410,COND T FED SPEC SINGLE MATERIAL RESPONSE OVERALL |  | SEATING SURFACE SHAPE | RADIAL |  | SEAT RADIUS | 0.180 INCHES NOMINAL |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 0BR59 |  | DESIGN CONTROL REFERENCE | 6021328-001 |   
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