| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.438 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.500 INCHES MINIMUM |
| MATERIAL | STEEL COMP 1541 OR |
| STEEL COMP 1340 OR |
| STEEL COMP 5140 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| HARDNESS RATING | 321.0 BRINELL STANDARD MINIMUM AND |
| 364.0 BRINELL STANDARD MAXIMUM OVERALL |
| MINIMUM TENSILE STRENGTH | 155000 POUNDS PER SQUARE INCH |
| MINIMUM YIELD STRENGTH | 140000 POUNDS PER SQUARE INCH |
| STYLE DESIGNATOR | ROUND BEND |
| DISTANCE FROM INSIDE CENTER OF BEND TO BOLT END | 6.680 INCHES NOMINAL |
| INSIDE DISTANCE BETWEEN SHANKS | 2.312 INCHES NOMINAL |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 34623 |
| DESIGN CONTROL REFERENCE | 808460 |