BOLT
PN 1/2-13 UNC-2AX2-1/2IN.LG
PN MIL-S-1222
PN M1222RN8C240GCNZE
PN 501-6937523 ITE
NSN 5306 00 174 9466
MFG MILITARY SPECIFCATIONS
 
NEW GOVSURPLUS
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                            2A                                               
THREAD DIRECTION                        RIGHT-HAND                                       
THREAD LENGTH                           1.250 INCHES NOMINAL                             
FASTENER LENGTH                         2.500 INCHES NOMINAL                              
HEAD STYLE                              HEXAGON                                          
HEAD HEIGHT                             0.297 INCHES NOMINAL                             
WIDTH BETWEEN FLATS                     0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM    
NOMINAL THREAD DIAMETER                 0.500 INCHES                                     
GRIP LENGTH                             1.250 INCHES NOMINAL                             
FEATURES PROVIDED                       UNFINISHED HEAD                                  
THREAD QUANTITY PER INCH                13                                               
MINIMUM TENSILE STRENGTH                75000 POUNDS PER SQUARE INCH                     
HARDNESS RATING                         100.0 ROCKWELL B MAXIMUM OVERALL                 
SPECIAL FEATURES                        TENSILE STRENGTH MAX 100,000 PER SQUARE INCH,    
                                        HARDNESS RATING HAS A MIN RATING OF 80 MIN       
                                        ROCKWELL B OVERALL                               
MATERIAL                                STEEL OVERALL                                    
SURFACE TREATMENT                       ZINC AND CHROMATE OVERALL                         
DEFINITIVE GOVERNMENT                   M1222RN8C240GCNZE                                
SPEC/STD REFERENCE                                                                       
MANUFACTURERS CODE                      81349                                             
NON-DEFINITIVE GOVERNMENT               MIL-DTL-1222                                     
SPEC/STD REFERENCE                                                                       
SPEC/STD CONTROLLING DATA               81349                                             
MANUFACTURERS CODE                                                                       
SURFACE TREATMENT DOCUMENT              ASTM B633 TY 2 ASSN STD SINGLE TREATMENT RESPONSE
AND CLASSIFICATION                      OVERALL                                          
THREAD SERIES DESIGNATOR                UNC                                              
SPECIFICATION/STANDARD DATA             81349-M1222RN8C240GCNZE GOVERNMENT SPECIFICATION 
NONDEFINITIVE SPEC/STD DATA             2 TYPE AND 2 GRADE