| FASTENER LENGTH | 1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM |
| HARDNESS RATING | 40.0 ROCKWELL C MINIMUM OVERALL AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM |
| HEAD DIAMETER | 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6415 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4340 OVERALL |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SHOULDER DIAMETER | 0.297 INCHES MINIMUM SECOND SHOULDER AND 0.327 INCHES MAXIMUM SECOND SHOULDER |
| SHOULDER DIAMETER | 0.3765 INCHES MINIMUM FOURTH HOLE AND 0.3770 INCHES MAXIMUM FOURTH HOLE |
| SHOULDER LENGTH | 1.084 INCHES MINIMUM SECOND SHOULDER AND 0.104 INCHES MAXIMUM SECOND SHOULDER |
| SHOULDER LENGTH | 0.240 INCHES MINIMUM FOURTH HOLE AND 0.260 INCHES MAXIMUM FOURTH HOLE |
| SHOULDER SHAPE | ROUND ALL SHOULDERS |
| SPECIAL FEATURES | RELIEF BETWEEN SECOND SHOULDER AND THREADS 0.173 MIN IN.,0.203 MAX IN. DIA; 0.062 IN. MAX LENGTH; RELIEF BETWEEN HEAD AND FRIST SHOULD 0.016 IN. MIN AND 0.046 IN. MAX LENGTH |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.297 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNJF |