SCREW SHOULDER
P/N 1444A344-1
NSN 5305 01 105 6255
MFG SYN TECH SYSTEMS
 
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                           0.280 INCHES NOMINAL                             
FASTENER LENGTH                         0.780 INCHES NOMINAL                             
HEAD STYLE                              FLAT CHAMFER                                     
HEAD DIAMETER                           0.357 INCHES MINIMUM AND 0.375 INCHES MAXIMUM    
HEAD HEIGHT                             0.177 INCHES MINIMUM AND 0.187 INCHES MAXIMUM    
SHOULDER DIAMETER                       0.246 INCHES MINIMUM AND 0.248 INCHES MAXIMUM    
                                        FIRST SHOULDER                                   
SHOULDER LENGTH                         0.500 INCHES NOMINAL FIRST SHOULDER              
INTERNAL DRIVE STYLE                    HEXAGON                                           
NOMINAL THREAD DIAMETER                 0.190 INCHES                                     
WIDTH ACROSS FLATS                      0.125 INCHES NOMINAL                             
THREAD QUANTITY PER INCH                24                                                
SHOULDER SHAPE                          ROUND FIRST SHOULDER                             
MATERIAL                                STEEL OVERALL                                    
SURFACE TREATMENT                       CADMIUM OVERALL                                  
DESIGN CONTROL REFERENCE                1444A344-1                                       
THE MANUFACTURERS DATA                  56672                                            
MANUFACTURERS CODE                                                                       
SURFACE TREATMENT DOCUMENT              QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT     
AND CLASSIFICATION                      RESPONSE OVERALL                                  
THREAD SERIES DESIGNATOR                UNC