| 
                                    
                                 | 
                             
                            
                                
                                     
                                 | 
                             
		                    
		                        
		                             National Stock Number: 4820-00-399-2877
  Federal Supply Class: 4820
  National Item Identification Number: 003992877
  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. 
		                         | 
		                     
		                    
		                        
                                    
  Manufacturer Information:
 | 42974 | 53059 | SPIRAX SARCO INC |   
		                         | 
		                     
				            
					            
						            
  Techincal Specification:
 | STYLE DESIGNATOR | THREADED FLANGED |  | FLANGE DIAMETER | 1.878 INCHES NOMINAL |  | BODY INSIDE DIAMETER | 0.960 INCHES NOMINAL |  | FLANGE SEAT TO DISK END HEIGHT | 0.170 INCHES NOMINAL |  | UNDER FLANGE HEIGHT | 0.375 INCHES NOMINAL |  | MATERIAL | STEEL CORROSION RESISTING OVERALL |  | SEATING SURFACE SHAPE | FLAT |  | THREAD SERIES DESIGNATOR | UNEF SINGLE THREADED PORTION |  | NOMINAL THREAD SIZE | 1.625 INCHES SINGLE THREADED PORTION |  | THREAD CLASS | 2A SINGLE THREADED PORTION |  | THREAD LENGTH | 0.312 INCHES NOMINAL SINGLE THREADED PORTION |  | SPECIAL FEATURES | W/TWO WRENCHING LUGS ON TOP OF SEAT 180 DEG APART |   
					             | 
				             
		                 
		             |