| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.062 INCHES NOMINAL |
| FASTENER LENGTH | 1.750 INCHES NOMINAL |
| FEATURES PROVIDED | CASEHARDENED |
| HARDNESS RATING | 21.0 ROCKWELL C MINIMUM AND 23.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.229 INCHES MINIMUM AND 0.239 INCHES MAXIMUM |
| HEAD DIAMETER | 0.750 INCHES NOMINAL |
| HEAD STYLE | FLAT CHAMFER |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 1020 OVERALL |
| MINIMUM TENSILE STRENGTH | 110000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| NONSTANDARD THREAD PITCH DIAMETER | +0.4639 TO 0.4675 INCHES |
| RIB LENGTH | 0.551 INCHES MINIMUM AND 0.561 INCHES MAXIMUM |
| RIB MAJOR DIAMETER | 0.552 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| SHOULDER DIAMETER | 0.526 INCHES MINIMUM AND 0.531 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | RIBBED FIRST SHOULDER |
| SHOULDER LENGTH | 0.614 INCHES MINIMUM AND 0.624 INCHES MAXIMUM FIRST SHOULDER |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.875 INCHES MINIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 20 |