| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.438 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.250 INCHES NOMINAL |
| MATERIAL | STEEL COMP 1042 OR |
| STEEL COMP 1043 OR |
| STEEL COMP 1044 OR |
| STEEL COMP 1045 OR |
| STEEL COMP 1140 OR |
| STEEL COMP 1141 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A576 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| SURFACE TREATMENT | PRIMER OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | TT-P-636 FED STD SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 25.0 ROCKWELL C MINIMUM AND |
| 30.0 ROCKWELL C MAXIMUM OVERALL |
| STYLE DESIGNATOR | SQUARE BEND |
| DISTANCE FROM INSIDE CENTER OF BEND TO BOLT END | 4.125 INCHES NOMINAL |
| INSIDE DISTANCE BETWEEN SHANKS | 1.937 INCHES NOMINAL |