| CROSS-SECTIONAL SHAPE | HEXAGON |
| WIDTH ACROSS FLATS | 0.312 INCHES NOMINAL |
| STYLE DESIGNATOR | LEFT INTERNAL AND RIGHT INTERNAL THREADS |
| LENGTH | 5.50 INCHES MINIMUM AND |
| 5.70 INCHES MAXIMUM |
| LEFT COUNTERSINK ANGLE | 115.0 DEGREES MINIMUM AND |
| 125.0 DEGREES MAXIMUM |
| RIGHT COUNTERSINK ANGLE | 115.0 DEGREES MINIMUM AND |
| 125.0 DEGREES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNC LEFT INTERNAL (INCLUDES THRU THREAD) |
| UNC RIGHT INTERNAL |
| NOMINAL THREAD SIZE | 0.164 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) |
| 0.164 INCHES RIGHT INTERNAL |
| THREAD QUANTITY PER INCH | 32 LEFT INTERNAL (INCLUDES THRU THREAD) |
| 32 RIGHT INTERNAL |
| THREAD CLASS | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| 2B RIGHT INTERNAL |
| THREAD DIRECTION | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| RIGHT-HAND RIGHT INTERNAL |
| THREAD LENGTH | 0.223 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) |
| 0.223 INCHES NOMINAL RIGHT INTERNAL |
| SPECIAL FEATURES | HELICAL INSERT MS21209C0815 |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SPACER,SLEEVE-HEX,THREADED,SELF |