SCREW STEEL
P/N NAS517-3-14
NSN 5305-00-207-1789
MFG NATIONAL AEROSPACE STANDARDS
 
NEW GOV SURPLUS
SUPPLIER CAGE CODE 03EF7
 
ITEM NAME:   SCREW,MACHINE
DEFINITION:  An externally threaded fastener whose threaded portion is of one
             nominal diameter, No 0 (0.060 in./1.5 mm) or larger, designed to be
             held or driven with either a wrench or an inserted driver or both
             (excluding internal socket or internal multiple spline types), in
             sizes below No. 10 (0.190 in./5 mm). No. 10 and larger sizes must have
             a head designed for any type inserted driver (excluding internal
             socket or internal 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. Excludes BOLT, CLEVIS; BOLT, EXTERNALLY
             RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; and SCREW, ASSEMBLED
             WASHER. See also, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL
             WRENCHING; and SCREW, CAP SOCKET HEAD.
            
 
CHARACTERISTIC                          VALUE
THREAD CLASS                            3A                                               
THREAD DIRECTION                        RIGHT-HAND                                       
THREAD LENGTH                           0.314 INCHES MINIMUM AND 0.451 INCHES MAXIMUM    
FASTENER LENGTH                         1.266 INCHES MINIMUM AND 1.311 INCHES MAXIMUM    
HEAD STYLE                              FLAT COUNTERSUNK                                 
HEAD DIAMETER                           0.337 INCHES MINIMUM AND 0.387 INCHES MAXIMUM    
INTERNAL DRIVE STYLE                    CROSS RECESS TYPE 1                              
NOMINAL THREAD DIAMETER                 0.190 INCHES                                     
THREAD QUANTITY PER INCH                32                                               
MINIMUM TENSILE STRENGTH                160000 POUNDS PER SQUARE INCH                     
HARDNESS RATING                         36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C      
                                        MAXIMUM                                          
COUNTERSINK ANGLE                       99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM   
SCREW MATERIAL                          STEEL COMP 8630                                  
SCREW MATERIAL DOCUMENT AND             MIL-S-6050 MIL SPEC SINGLE MATERIAL RESPONSE OR  
CLASSIFICATION                          AN-S-9 MIL STD SINGLE MATERIAL RESPONSE          
SCREW SURFACE TREATMENT                 CADMIUM AND CHROMATE                             
SCREW SURFACE TREATMENT                 QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT        
DOCUMENT AND CLASSIFICATION             RESPONSES                                        
THREAD SERIES DESIGNATOR                UNF