| CROSS-SECTIONAL SHAPE | HEXAGON |
| LENGTH | 2.250 INCHES NOMINAL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | COUPLER |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A322 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A331 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4140 OR STEEL COMP 8640 OVERALL |
| NOMINAL THREAD SIZE | 0.750 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) |
| WIDTH ACROSS FLATS | 1.120 INCHES NOMINAL |
| STYLE DESIGNATOR | INTERNALLY THREADED FULL LENGTH |
| THREAD CLASS | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| THREAD DIRECTION | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| THREAD LENGTH | 2.250 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| THREAD QUANTITY PER INCH | 10 LEFT INTERNAL (INCLUDES THRU THREAD) |