NUT SELF-LOCKING
P/N MK2031-3BC
P/N MS21072-3K
P/N NAS696C3K
P/N LHTA57M2860-02BC
NSN 5310-00-762-7458
MFG ALCOA GLOBAL FASTENERS
 
NEW GOV SURPLUS
SUPPLIER CAGE CODE 03EF7
 
ITEM NAME:   NUT,SELF-LOCKING,PL
DEFINITION:  A nut with a flanged base of varied shapes which may be plain or
             mounted by rivets, bolts, welding or integral prongs. An integral
             feature is incorporated for locking on the threads of a mating member.
            
 
CHARACTERISTIC                          VALUE
THREAD CLASS                            3B                                               
THREAD DIRECTION                        RIGHT-HAND                                       
LOCKING FEATURE                         PREVAILING TORQUE ALL METAL DESIGN               
MOUNTING HOLE DIAMETER                  0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM    
NUT STYLE                               PLATE                                            
NUT LENGTH                              0.745 INCHES MAXIMUM                             
NUT HEIGHT                              0.250 INCHES MAXIMUM                             
PLATE THICKNESS                         0.047 INCHES MAXIMUM                             
PLATE WIDTH                             0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM    
NUT MOUNTING PROVISION                  COUNTERSUNK HOLES                                
MOUNTING PROVISION LOCATION             OPPOSITE NUT PROJECTION SIDE                     
MOUNTING HOLE ARRANGEMENT               2 HOLES                                           
STYLE                                                                                    
DISTANCE FROM APERTURE                  0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM    
CENTER TO MOUNTING HOLE                                                                   
CENTER                                                                                   
CENTER TO CENTER DISTANCE               0.217 INCHES MINIMUM AND 0.221 INCHES MAXIMUM    
BETWEEN MOUNTING HOLES                                                                    
ALONG LENGTH                                                                             
TEMP RATING                             800.0 DEG FAHRENHEIT NOMINAL                     
THREAD SERIES                           UNJF                                             
THREAD QUANTITY PER INCH                32                                               
HARDNESS RATING                         49.0 ROCKWELL C MAXIMUM                           
NOMINAL THREAD SIZE                     0.190 INCHES                                     
MOUNTING HOLE COUNTERSINK               98.0 DEGREES MINIMUM AND 102.0 DEGREES MAXIMUM   
ANGLE                                                                                     
MATERIAL                                IRON ALLOY 660 OVERALL                           
MATERIAL DOCUMENT AND                   AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OR AMS
CLASSIFICATION                          5737 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5525
                                        ASSN STD SINGLE MATERIAL RESPONSE OVERALL        
III PRECIOUS MATERIAL                   SILVER                                           
SURFACE TREATMENT                       SILVER OVERALL                                   
SURFACE TREATMENT DOCUMENT              AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE      
AND CLASSIFICATION                      OVERALL