| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.438 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.750 INCHES NOMINAL |
| FASTENER LENGTH | 5.344 INCHES NOMINAL |
| MATERIAL | STEEL COMP 8740 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND |
| 32.0 ROCKWELL C MAXIMUM OVERALL |
| STYLE DESIGNATOR | CONCENTRIC HOLE UNTHREADED |
| SHOULDER DIAMETER | 0.4465 INCHES MINIMUM AND |
| 0.4470 INCHES MAXIMUM |
| SHOULDER LENGTH | 4.469 INCHES NOMINAL |
| CONCENTRIC HOLE DEPTH | 4.469 INCHES NOMINAL |
| CONCENTRIC HOLE DIAMETER | 0.219 INCHES NOMINAL |
| HEAD STYLE | HEXAGON |
| HEAD HEIGHT | 0.219 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.616 INCHES MINIMUM AND |
| 0.627 INCHES MAXIMUM |
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 5.219 INCHES NOMINAL FIRST HOLE |
| SHANK UNTHREADED HOLE DIAMETER | 0.107 INCHES MINIMUM AND |
| 0.112 INCHES MAXIMUM FIRST HOLE |
| SPECIAL FEATURES | INTERIOR OF BOLT SLUSHED W/OIL AND CORK PLUG SEALED |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 77445 |
| DESIGN CONTROL REFERENCE | 41711 |