SCREW
P/N ST3M495-4-3-1
P/N HT4016-4-3X
P/N 11911-4-3-1
P/N WC4010-4-3
NSN 5305 01 081 3102
MFG KLX INC
 
NEW GOV SURPLUS
 
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                           0.372 INCHES MINIMUM AND 0.422 INCHES MAXIMUM    
FASTENER LENGTH                         0.570 INCHES MINIMUM AND 0.600 INCHES MAXIMUM    
HEAD STYLE                              FILLISTER COUNTERSUNK                            
HEAD DIAMETER                           0.389 INCHES MINIMUM AND 0.3948 INCHES MAXIMUM   
HEAD HEIGHT                             0.015 INCHES MAXIMUM                             
SHOULDER DIAMETER                       0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM  
                                        FIRST SHOULDER                                   
SHOULDER LENGTH                         0.135 INCHES NOMINAL FIRST SHOULDER              
INTERNAL DRIVE STYLE                    HIGH-TORQUE                                       
NOMINAL THREAD DIAMETER                 0.250 INCHES                                     
THREAD QUANTITY PER INCH                28                                               
MINIMUM TENSILE STRENGTH                125000 POUNDS PER SQUARE INCH                    
COUNTERSINK ANGLE                       99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM   
SHOULDER SHAPE                          ROUND FIRST SHOULDER                             
SPECIAL FEATURES                        SOCKET DRIVE RECESS IN THREAD END 0.095 IN. MIN  
                                        0.097 IN. MAX WIDTH ACROSS FLATS                 
MATERIAL                                STEEL COMP XM-13 OVERALL                         
MATERIAL DOCUMENT AND                   AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CLASSIFICATION                                                                           
SURFACE TREATMENT                       PASSIVATE OVERALL                                 
SURFACE TREATMENT DOCUMENT              QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
AND CLASSIFICATION                                                                       
THREAD SERIES DESIGNATOR                UNJF