SCREW
P/N 923B672-1
NSN 5305 00 054 5203
MFG HAMILTON SUNDSTRAND
 
NEW GOV SURPLUS
SUPPLIER CAGE CODE 03EF7
 
ITEM NAME   SCREW,CAP,SOCKET HE
DEFINITION  An externally threaded fastener whose threaded portion is of one
            nominal diameter. The head has an internal socket or multiple spline
             for use with an inserted driver. A locking feature may be incorporated
             in the design of the head or threads. Excludes items with bevel
             (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW,
             SHOULDER; and SCREW, MACHINE.
            
 
CHARACTERISTIC                          VALUE
THREAD CLASS                            3A                                               
THREAD DIRECTION                        RIGHT-HAND                                       
THREAD LENGTH                           1.020 INCHES MAXIMUM                             
FASTENER LENGTH                         0.990 INCHES MINIMUM AND 1.020 INCHES MAXIMUM    
HEAD STYLE                              FLAT CHAMFER                                     
HEAD DIAMETER                           0.370 INCHES NOMINAL                              
HEAD HEIGHT                             0.247 INCHES NOMINAL                             
INTERNAL DRIVE STYLE                    HEXAGON                                          
NOMINAL THREAD DIAMETER                 0.250 INCHES                                      
WIDTH ACROSS FLATS                      0.189 INCHES NOMINAL                             
THREAD QUANTITY PER INCH                28                                               
MINIMUM TENSILE STRENGTH                160000 POUNDS PER SQUARE INCH                    
HARDNESS RATING                         36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C      
                                        MAXIMUM OVERALL                                  
SPECIAL FEATURES                        0.060 IN. DIA HOLE DRILLED THRU LONGITUDINAL     
                                        CENTERLINE                                       
MATERIAL                                STEEL COMP 4037 OVERALL                          
MATERIAL DOCUMENT AND                   QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CLASSIFICATION                                                                           
SURFACE TREATMENT                       CADMIUM AND CHROMATE OVERALL