| FASTENER LENGTH | 0.765 INCHES MINIMUM AND 0.767 INCHES MAXIMUM |
| HEAD HEIGHT | 0.075 INCHES NOMINAL |
| HEAD DIAMETER | 0.500 INCHES NOMINAL |
| HEAD STYLE | ROUND W/WRENCH FLATS |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | NICKEL ALLOY 718 OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SHOULDER DIAMETER | 0.2555 INCHES MINIMUM AND 0.2560 INCHES MAXIMUM FOURTH SHOULDER |
| SHOULDER DIAMETER | 0.349 INCHES MINIMUM AND 0.359 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER DIAMETER | 0.349 INCHES MINIMUM AND 0.359 INCHES MAXIMUM THIRD SHOULDER |
| SHOULDER DIAMETER | 0.3835 INCHES MINIMUM AND 0.3845 INCHES MAXIMUM SECOND SHOULDER |
| SHOULDER LENGTH | 0.041 INCHES MINIMUM AND 0.051 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 0.054 INCHES MINIMUM AND 0.066 INCHES MAXIMUM THIRD SHOULDER |
| SHOULDER LENGTH | 0.075 INCHES MINIMUM AND 0.095 INCHES MAXIMUM FOURTH SHOULDER |
| SHOULDER LENGTH | 0.100 INCHES NOMINAL SECOND SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SPECIAL FEATURES | UNDERCUT 0.226 DIA.,0.025 TO 0.035 BETWEEN THIRD AND FOURTH SHOULDERS; THD. REL. 0.191 TO 0.201 DIA. 0.089 LG |
| WIDTH BETWEEN FLATS | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.351 INCHES MINIMUM AND 0.361 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |