| MATERIAL | STEEL CORROSION RESISTING STANDOFF | 
| SURFACE TREATMENT | PASSIVATE STANDOFF | 
| STYLE DESIGNATOR | FLANGED WITH LEFT INTERNAL THREAD | 
| FLANGE THICKNESS | 0.417 INCHES NOMINAL | 
| LENGTH | 0.797 INCHES NOMINAL | 
| FLANGE WIDTH ACROSS FLATS | 0.134 INCHES MINIMUM AND | 
|  | 0.140 INCHES MAXIMUM | 
| THREAD SERIES DESIGNATOR | UNC LEFT INTERNAL (INCLUDES THRU THREAD) | 
|  | UNC RIGHT EXTERNAL | 
| NOMINAL THREAD SIZE | 0.138 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) | 
|  | 0.112 INCHES RIGHT EXTERNAL | 
| THREAD QUANTITY PER INCH | 32 LEFT INTERNAL (INCLUDES THRU THREAD) | 
|  | 40 RIGHT EXTERNAL | 
| THREAD CLASS | 2B LEFT INTERNAL (INCLUDES THRU THREAD) | 
|  | 2A RIGHT EXTERNAL | 
| THREAD DIRECTION | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) | 
|  | RIGHT-HAND RIGHT EXTERNAL | 
| THREAD LENGTH | 0.328 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) | 
|  | 0.266 INCHES NOMINAL RIGHT EXTERNAL | 
| THE MANUFACTURERS DATA |  | 
| MANUFACTURERS CODE | 18876 | 
| DESIGN CONTROL REFERENCE | 10193106 |