BOLT
P/N AN4C44
NSN 5306 00 275 9649
MFG NATIOANL AEROSPACE STANDARDS
 
NEW GOV SURLPUS
SUPPLIER CAGE CODE 03EF7
 
ITEM NAME:   BOLT,MACHINE
DEFINITION:  An externally threaded fastener designed for insertion through holes
             in assembled parts and normally intended to be tightened or released
             by torquing a nut.  The threaded and unthreaded portions are both of
             one nominal diameter of 0.190 inch (5 mm) or larger. The head is not
             designed to be held or driven with an inserted driver or by the thumb
             and fingers.  A locking feature may be incorporated in the design of
             the head or threads.  Head dimensions and sizes of threaded and
             unthreaded portions shall conform to internationally recognized
             fastener standards.  For items having a grip length portion machined
             to a tolerance of 0.0015 inch (0.038 mm) or less, BOLT, SHEAR. See
             also SCREW, CAP, HEXAGON HEAD and SCREW, MACHINE.
            
 
CHARACTERISTIC                          VALUE
THREAD CLASS                            3A                                                
THREAD DIRECTION                        RIGHT-HAND                                       
THREAD LENGTH                           0.438 INCHES MINIMUM AND 0.515 INCHES MAXIMUM    
FASTENER LENGTH                         4.516 INCHES MINIMUM AND 4.562 INCHES MAXIMUM    
HEAD STYLE                              HEXAGON                                          
HEAD HEIGHT                             0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM    
WIDTH BETWEEN FLATS                     0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM    
SHANK UNTHREADED HOLE                   0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM    
DIAMETER                                FIRST HOLE                                       
NOMINAL THREAD DIAMETER                 0.250 INCHES                                     
GRIP LENGTH                             4.047 INCHES MINIMUM AND 4.078 INCHES MAXIMUM    
FEATURES PROVIDED                       FINISHED HEAD                                     
THREAD QUANTITY PER INCH                28                                               
MINIMUM TENSILE STRENGTH                125000 POUNDS PER SQUARE INCH                    
HARDNESS RATING                         26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C      
                                        MAXIMUM OVERALL                                  
DISTANCE FROM HEAD LARGEST              4.359 INCHES MINIMUM AND 4.391 INCHES MAXIMUM    
BEARING SURFACE TO SHANK                FIRST HOLE                                       
HOLE CENTER                                                                              
MATERIAL                                STEEL COMP 431 OVERALL                           
MATERIAL DOCUMENT AND                   MIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE    
CLASSIFICATION                          OVERALL                                          
SURFACE TREATMENT                       PASSIVATE OVERALL                                
THREAD SERIES DESIGNATOR                UNF