| DISTANCE FROM CENTERLINE TO FLAT | 0.206 INCHES MINIMUM AND 0.207 INCHES MAXIMUM |
| CHAMFER ANGLE | 45.0 DEGREES NOMINAL |
| FASTENER LENGTH | 0.845 INCHES MINIMUM AND 0.855 INCHES MAXIMUM |
| HEAD DIAMETER | 0.620 INCHES MINIMUM AND 0.640 INCHES MAXIMUM |
| HEAD HEIGHT | 0.040 INCHES MINIMUM AND 0.045 INCHES MAXIMUM |
| HEAD STYLE | DEE CHAMFER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SHOULDER DIAMETER | 0.343 INCHES MINIMUM AND 0.344 INCHES MAXIMUM SECOND SHOULDER |
| SHOULDER DIAMETER | 0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 0.142 INCHES NOMINAL SECOND SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER SHAPE | ROUND SECOND SHOULDER |
| SHOULDER LENGTH | 0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM FIRST SHOULDER |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.270 INCHES MINIMUM AND 0.320 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH | 28 |