SCREW 
P/N 8004857-1 
NSN 5305 00 357 9830 

ITEM NAME:   SCREW,EXTERNALLY RE
DEFINITION:  An externally threaded fastener whose threaded portion is of one
             nominal diameter, and whose unthreaded portion has been machined or
             ground in one or more places or over its entire length to a maximum
             diameter less than the minimum pitch diameter of the thread (excludes
             undercut for thread relief). It is No. 0 (0.060 IN.) (1.5 mm) or
             larger, and is designed to be held or driven with either a wrench or
             inserted driver (excluding internal socket and multiple spline types)
             or both in sizes below No. 10 (0.190 IN.) (5 mm) and larger sizes must
             have a head designed for any type inserted driver (excluding internal
             socket and 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. See also BOLT, EXTERNALLY RELIEVED BODY
             and BOLT, INTERNAL WRENCHING.
             

CHARACTERISTIC                          VALUE
THREAD CLASS                            2A                                                
THREAD DIRECTION                        RIGHT-HAND                                        
THREAD LENGTH                           0.320 INCHES MINIMUM AND 0.400 INCHES MAXIMUM     
FASTENER LENGTH                         0.840 INCHES MINIMUM AND 0.880 INCHES MAXIMUM     
HEAD STYLE                              HEXAGON                                           
HEAD HEIGHT                             0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM     
WIDTH BETWEEN FLATS                     0.250 INCHES NOMINAL                              
FIRST DIAMETER FROM HEAD                0.118 INCHES MINIMUM AND 0.128 INCHES MAXIMUM     
DISTANCE FROM LARGEST                   0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM     
BEARING SURFACE OF HEAD TO                                                                
END OF FIRST DIAMETER                                                                     
INTERNAL DRIVE STYLE                    CROSS RECESS TYPE 1                               
NOMINAL THREAD DIAMETER                 0.164 INCHES                                      
THREAD QUANTITY PER INCH                32                                                
EXTERNALLY RELIEVED BODY                1                                                 
DIAMETER QUANTITY                                                                         
MATERIAL                                STEEL COMP 1018 OVERALL                           
MATERIAL DOCUMENT AND                   66 FED STD SINGLE MATERIAL RESPONSE OVERALL       
CLASSIFICATION                                                                            
SURFACE TREATMENT                       CADMIUM AND CHROMATE OVERALL                      
DESIGN CONTROL REFERENCE                8004857-1                                         
THE MANUFACTURERS DATA                  31550                                             
MANUFACTURERS CODE                                                                        
SURFACE TREATMENT DOCUMENT              QQ-P-416,TY 2,CL 2 FED SPEC ALL TREATMENT         
AND CLASSIFICATION                      RESPONSES OVERALL                                 
THREAD SERIES DESIGNATOR                UNC                                               



MFG HARRIS CORPORATION 
NEW GOV SURPLUS 
SUPPLIER CAGE CODE 03EF7