| CONCENTRIC HOLE DEPTH | 4.180 INCHES MINIMUM AND 4.220 INCHES MAXIMUM |
| CONCENTRIC HOLE DIAMETER | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM |
| COUNTERBORE DIAMETER | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM |
| COUNTERBORE DEPTH | 1.070 INCHES MINIMUM AND 1.090 INCHES MAXIMUM |
| FASTENER LENGTH | 4.510 INCHES MINIMUM AND 4.530 INCHES MAXIMUM |
| HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SHOULDER DIAMETER | 1.290 INCHES MINIMUM AND 1.310 INCHES MAXIMUM |
| SHOULDER LENGTH | 3.200 INCHES MINIMUM AND 3.240 INCHES MAXIMUM |
| STYLE DESIGNATOR | COUNTERBORE UNTHREADED |
| WIDTH BETWEEN FLATS | 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 7470 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 3A |
| THREAD LENGTH | 0.560 INCHES MINIMUM AND 0.580 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNJF |
| THREAD QUANTITY PER INCH | 28 |