| CROSS-SECTIONAL SHAPE | SQUARE |
| LEFT PROJECTION DIAMETER | 0.375 INCHES NOMINAL |
| LEFT PROJECTION LENGTH | 0.3125 INCHES NOMINAL |
| LENGTH | 4.000 INCHES NOMINAL |
| MATERIAL | ALUMINUM ALLOY OVERALL |
| NOMINAL THREAD SIZE | 0.375 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) |
| NOMINAL THREAD SIZE | 0.375 INCHES RIGHT INTERNAL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | POST, SPACING |
| RIGHT PROJECTION DIAMETER | 0.3125 INCHES NOMINAL |
| RIGHT PROJECTION LENGTH | 0.375 INCHES NOMINAL |
| WIDTH ACROSS FLATS | 0.375 INCHES NOMINAL |
| STYLE DESIGNATOR | PROJECTION BOTH ENDS LEFT AND RIGHT INTERNAL THREADS |
| SURFACE TREATMENT | ANODIZE OVERALL |
| THREAD CLASS | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| THREAD CLASS | 2B RIGHT INTERNAL |
| THREAD DIRECTION | RIGHT-HAND RIGHT INTERNAL |
| THREAD DIRECTION | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| THREAD LENGTH | 0.3125 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) |
| THREAD LENGTH | 0.3125 INCHES NOMINAL RIGHT INTERNAL |
| THREAD QUANTITY PER INCH | 32 LEFT INTERNAL (INCLUDES THRU THREAD) |
| THREAD QUANTITY PER INCH | 32 RIGHT INTERNAL |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) RIGHT INTERNAL |