SCREW SHOULDER
P/N HT-4020-4-11AX
PN ST3M653C4-11A
PN ST3M653C4-11AX
NSN 5305 01 146 9893
MFG ARCONIC GLOBAL FASTENERS
 
NEW GOV SURPLUS
SUPPLIER CAGE CODE 03EF7
 
ITEM NAME:   SCREW,SHOULDER
DEFINITION:  An externally threaded fastener whose threaded portion is of one
             nominal diameter, No 0 (0.060 IN.) (1.5 mm) or larger. It has a round
             unthreaded neck or shank all or part of which is of greater diameter
             than the threaded portion. The head is designed to be driven with
             either a wrench or an inserted driver or both in sizes below No. 10
             (0.190 IN.) (5 mm) nominal diameter. No. 10 (0.190 IN.) (5 mm) and
             larger sizes must be designed for any type of inserted driver, but may
             also provide for external wrenching of the head. A locking feature may
             be incorporated in the design of the head or threads. For items which
             are both shouldered and have an externally relieved body, use SCREW,
             EXTERNALLY RELIEVED BODY. For items with a No. 10 (0.190 IN.) (5 mm)
             or larger thread diameter without an inserted driver head, use BOLT,
             SHOULDER. Excludes BOLT, INTERNAL WRENCHING and SCREW, CAP, SOCKET
             HEAD.
            
 
CHARACTERISTIC                          VALUE
THREAD CLASS                            3A                                                
THREAD DIRECTION                        RIGHT-HAND                                       
THREAD LENGTH                           0.442 INCHES MINIMUM AND 0.509 INCHES MAXIMUM    
FASTENER LENGTH                         1.140 INCHES MINIMUM AND 1.189 INCHES MAXIMUM    
HEAD STYLE                              FLAT COUNTERSUNK UNDERCUT                        
HEAD DIAMETER                           0.502 INCHES MINIMUM AND 0.507 INCHES MAXIMUM    
HEAD HEIGHT                             0.065 INCHES MINIMUM AND 0.067 INCHES MAXIMUM    
SHOULDER DIAMETER                       0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM  
                                        FIRST SHOULDER                                   
SHOULDER LENGTH                         0.611 INCHES MINIMUM AND 0.633 INCHES MAXIMUM    
                                        FIRST SHOULDER                                   
INTERNAL DRIVE STYLE                    HIGH-TORQUE                                       
NOMINAL THREAD DIAMETER                 0.250 INCHES                                     
THREAD QUANTITY PER INCH                28                                               
COUNTERSINK ANGLE                       99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM   
SHOULDER SHAPE                          ROUND FIRST SHOULDER                             
SPECIAL FEATURES                        FURNISHED WITH ONE RUBBER O RING                 
MATERIAL                                STEEL COMP XM-13 OVERALL                         
MATERIAL DOCUMENT AND                   AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CLASSIFICATION                                                                           
THREAD SERIES DESIGNATOR                UNJF