FASTENER
P/N HT4U9
P/N 54263-4-9
P/N HT408-4-9
NSN 5305 00 957 5708
MFG STANDARD AIR PARTS
 
NEW GOV SURPLUS
SUPPLIER CAGE CODE 03EF7
 
ITEM NAME   SCREW,MACHINE
DEFINITION  An externally threaded fastener whose threaded portion is of one
             nominal diameter, No 0 (0.060 in./1.5 mm) or larger, designed to be
             held or driven with either a wrench or an inserted driver or both
             (excluding internal socket or internal multiple spline types), in
             sizes below No. 10 (0.190 in./5 mm). No. 10 and larger sizes must have
             a head designed for any type inserted driver (excluding internal
             socket or internal multiple spline types), but may also be designed
             for external wrenching. A locking feature may be incorporated in the
             design of the head or threads. Excludes BOLT, CLEVIS; BOLT, EXTERNALLY
             RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; and SCREW, ASSEMBLED
             WASHER. See also, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL
             WRENCHING; and SCREW, CAP SOCKET HEAD.
            
 
CHARACTERISTIC                          VALUE
THREAD CLASS                            3A                                                
THREAD DIRECTION                        RIGHT-HAND                                       
THREAD LENGTH                           0.469 INCHES MINIMUM                             
FASTENER LENGTH                         1.031 INCHES NOMINAL                             
HEAD STYLE                              FLAT COUNTERSUNK UNDERCUT                        
HEAD DIAMETER                           0.502 INCHES MINIMUM AND 0.507 INCHES MAXIMUM    
HEAD HEIGHT                             0.071 INCHES MINIMUM AND 0.073 INCHES MAXIMUM    
INTERNAL DRIVE STYLE                    HIGH-TORQUE                                      
NOMINAL THREAD DIAMETER                 0.250 INCHES                                     
THREAD QUANTITY PER INCH                28                                               
MINIMUM TENSILE STRENGTH                160000 POUNDS PER SQUARE INCH                    
COUNTERSINK ANGLE                       100.0 DEGREES NOMINAL                            
SCREW MATERIAL                          STEEL                                            
SCREW SURFACE TREATMENT                 CADMIUM                                          
DESIGN CONTROL REFERENCE                3M48-4-9                                          
THE MANUFACTURERS DATA                  76301