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		                        | National Stock Number:
 4820-00-834-0856
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 008340856
 
 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:
 
 | 16209 | 03476 | TEREX REEDRILL DBA REEDRILL TEXOMA DIV TEREX MINING |  | 391 2983 005 | 13829 | PARKER HANNIFIN CORPORATION |  | LA1530 | 13829 | PARKER HANNIFIN CORPORATION | 
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 Techincal Specification:
 
 | STYLE DESIGNATOR | PLAIN FLANGED |  | FLANGE DIAMETER | 1.000 INCHES NOMINAL |  | BODY OUTSIDE DIAMETER | 0.815 INCHES NOMINAL |  | BODY INSIDE DIAMETER | 0.564 INCHES NOMINAL |  | UNDER FLANGE HEIGHT | 0.312 INCHES NOMINAL |  | MATERIAL | STEEL COMP 4150 OVERALL |  | HARDNESS RATING | 55.0 ROCKWELL C MINIMUM AND |  |  | 60.0 ROCKWELL C MAXIMUM BODY |  | SEATING SURFACE SHAPE | ANGULAR |  | SEAT ANGLE IN DEG | 30.000 NOMINAL | 
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