| DISTANCE FROM CENTERLINE TO FLAT | 0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
| FASTENER LENGTH | 1.210 INCHES MINIMUM AND 1.230 INCHES MAXIMUM |
| HEAD DIAMETER | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM |
| HEAD HEIGHT | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| HEAD STYLE | DEE CHAMFER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| NOMINAL THREAD DIAMETER | 0.438 INCHES |
| NONSTANDARD THREAD PITCH DIAMETER | +0.3994 TO 0.4020 INCHES |
| SHOULDER DIAMETER | 0.4460 INCHES MINIMUM AND 0.4470 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 0.650 INCHES MINIMUM AND 0.710 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.520 INCHES MINIMUM AND 0.560 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNF |