Orbital Parts, Inc.

NUT, SELF-LOCKING, HEX
Part Number: MS21083C12

NSN: 5310-00-923-4219

THREAD SERIES                      UNJF                                               
NOMINAL THREAD SIZE            0.750 INCHES                                       
THREAD QUANTITY PER INCH   16                                                 
THREAD CLASS                       3B                                                 
THREAD DIRECTION                RIGHT-HAND                                         
MATERIAL                              PLASTIC POLYAMIDE LOCKING INSERT                   
                                             STEEL CORROSION RESISTING NUT                      
SURFACE TREATMENT               PASSIVATE OVERALL EXCEPT INSERT                    
SURFACE TREATMENT DOCUMENT AND     QQ-P-35 FED SPEC SINGLE TREATMENT                  
CLASSIFICATION                                   RESPONSE OVERALL EXCEPT INSERT                     
HARDNESS RATING                   NOT RATED                                          
NUT STYLE                              A12 HEXAGON                                        
NUT HEIGHT                            0.422 INCHES MAXIMUM                               
WIDTH ACROSS FLATS              1.052 INCHES MINIMUM AND                           
                                               1.064 INCHES MAXIMUM                               
BEARING SURFACE TYPE            CHAMFERED OR WASHER FACED                          
LOCKING FEATURE                    PREVAILING TORQUE WITH                             
                                              NONMETALLIC INSERT                                 
COUNTERSINK ANGLE                88.0 DEGREES MINIMUM NUT                           
LUBRICATION                           SOLUBLE LUBRICANT                                  
TEMP RATING                           250.0 DEG FAHRENHEIT MAXIMUM                       
III BEARING SURFACE FINISH         125.0 MICROINCHES                                  
III END ITEM IDENTIFICATION        STURGEON CLASS SSN (637);DEEP                      
                                              SUBMERGENCE SYSTEMS PROGRAMS                       
                                               (DSSP);HELICOPTER, MH-53E;F-22                     
                                              RAPTOR AIR DOMINANCE FIGHTER;                      
                                              TICONDEROGA CLASS CG (47);                         
                                               MISSILE, TOMAHAWK; SUPPORT                         
                                              EQUIPMENT, B-1 AIRCRAFT; LOS                       
                                              ANGELES CLASS SSN (688); RADAR                     
                                              SET, LIGHTWEIGHT 3D (AN/TPS-59);                   
                                              STREAM (STD. TENSIONED                             
                                             REPLENISHMENT AT SEA METHOD)