| CONCENTRIC HOLE DEPTH | 1.901 INCHES MINIMUM AND 1.926 INCHES MAXIMUM |
| CONCENTRIC HOLE DIAMETER | 0.107 INCHES MINIMUM AND 0.114 INCHES MAXIMUM |
| FASTENER LENGTH | 2.308 INCHES MINIMUM AND 2.438 INCHES MAXIMUM |
| HEAD HEIGHT | 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| INTERNAL THREAD CLASS | 3B HEAD |
| INTERNAL THREAD DIRECTION | RIGHT-HAND HEAD |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | NICKEL ALLOY 718 OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SHANK UNTHREADED HOLE DIAMETER | 0.107 INCHES MINIMUM AND 0.114 INCHES MAXIMUM THREADS |
| SHOULDER DIAMETER | 0.7477 INCHES MINIMUM AND 0.7487 INCHES MAXIMUM |
| SHOULDER LENGTH | 1.526 INCHES MINIMUM AND 1.536 INCHES MAXIMUM |
| SPECIAL FEATURES | SECOND HOLE IN THDS 90 DEGREED APART; 32 MICRO INCH FINISH ON SHOULDER AND THRD RELIEF |
| WIDTH BETWEEN FLATS | 1.052 INCHES MINIMUM AND 1.064 INCHES MAXIMUM |
| STYLE DESIGNATOR | COUNTERBORE THREADED |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.630 INCHES MINIMUM AND 0.665 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD SERIES | UNF HEAD |
| THREADS PER INCH | 28 HEAD |