| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.562 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.000 INCHES MINIMUM |
| FASTENER LENGTH | 4.000 INCHES NOMINAL |
| MATERIAL | STEEL COMP 3140 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| HARDNESS RATING | 29.0 ROCKWELL C MINIMUM AND |
| 32.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | DEE CHAMFER |
| HEAD DIAMETER | 0.875 INCHES NOMINAL |
| HEAD HEIGHT | 0.312 INCHES NOMINAL |
| DISTANCE FROM CENTERLINE TO FLAT | 0.307 INCHES MINIMUM AND |
| 0.312 INCHES MAXIMUM |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER DIAMETER | 0.5632 INCHES MINIMUM AND |
| 0.5637 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 1.646 INCHES MINIMUM AND |
| 1.666 INCHES MAXIMUM FIRST SHOULDER |
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.840 INCHES NOMINAL ALL HOLES |
| SHANK UNTHREADED HOLE DIAMETER | 0.140 INCHES NOMINAL ALL HOLES |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 1ML14 |
| DESIGN CONTROL REFERENCE | 317710 |