SCREW MACHINE
P/N 50-521143
NSN 5305 00 215 6399
MFG BEECHCRAFT CORP
 
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                           0.297 INCHES MINIMUM AND 0.328 INCHES MAXIMUM    
FASTENER LENGTH                         1.063 INCHES NOMINAL                             
HEAD STYLE                              FLAT COUNTERSUNK                                 
HEAD DIAMETER                           0.499 INCHES NOMINAL                             
INTERNAL DRIVE STYLE                    SLOT                                             
NOMINAL THREAD DIAMETER                 0.250 INCHES                                      
THREAD QUANTITY PER INCH                28                                               
COUNTERSINK ANGLE                       99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM   
SCREW MATERIAL                          STEEL                                             
SCREW SURFACE TREATMENT                 CADMIUM                                          
SCREW SURFACE TREATMENT                 QQ-P-416,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE
DOCUMENT AND CLASSIFICATION                                                               
DESIGN CONTROL REFERENCE                50-521143                                        
THE MANUFACTURERS DATA                  70898                                            
MANUFACTURERS CODE                                                                        
THREAD SERIES DESIGNATOR                UNF