| 
                                    
                                 | 
                            
                            
                                
                                     
                                 | 
                            
		                    
		                        
		                             National Stock Number: 5305-01-432-1753
  Federal Supply Class: 5305
  National Item Identification Number: 014321753
  Description: SCREW,CAP,SOCKET HEAD
  Detail: An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE. 
		                         | 
		                    
		                    
		                        
                                    
  Manufacturer Information:
 | 3070AS590-2 | 30003 | NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY  NOT MATERIAL/PARTS SUPPLIER |  | 7/8-9X3-1/2 SHCS | 70034 | A G DAVIS & ENGINEERING/AA GAGE |  | 9251A886 | 2V507 | MCMASTER-CARR SUPPLY COMPANY |  | 91251A886 | 39428 | MCMASTER-CARR SUPPLY CO |   
		                         | 
		                    
				            
					            
						            
  Techincal Specification:
 | THREAD SERIES DESIGNATOR | UNRC |  | NOMINAL THREAD DIAMETER | 0.875 INCHES |  | THREAD QUANTITY PER INCH | 9 |  | THREAD CLASS | 3A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 2.500 INCHES MINIMUM AND |   | 3.060 INCHES MAXIMUM |  | FASTENER LENGTH | 3.500 INCHES NOMINAL |  | MATERIAL | STEEL UNS K03104 OVERALL |  | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |  | SURFACE TREATMENT | OXIDE OVERALL |  | COLOR | BLACK OVERALL |  | HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND |   | 45.0 ROCKWELL C MAXIMUM OVERALL |  | MINIMUM TENSILE STRENGTH | 170000 POUNDS PER SQUARE INCH |  | HEAD STYLE | FLAT CHAMFER |  | HEAD DIAMETER | 1.293 INCHES MINIMUM AND |   | 1.312 INCHES MAXIMUM |  | HEAD HEIGHT | 0.864 INCHES MINIMUM AND |   | 0.875 INCHES MAXIMUM |  | INTERNAL DRIVE STYLE | HEXAGON |  | WIDTH ACROSS FLATS | 0.750 INCHES NOMINAL |   
					             |