| COLOR | BLACK GRIP |
| COLOR | BLACK HEAD |
| FASTENER LENGTH | 0.658 INCHES MINIMUM AND 0.688 INCHES MAXIMUM |
| HEAD DIAMETER | 0.428 INCHES NOMINAL |
| HEAD HEIGHT | 0.127 INCHES NOMINAL |
| HEAD STYLE | BUTTON |
| INTERNAL DRIVE STYLE | HEXAGON |
| LOCKING FEATURE | STRIP THREADS |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SPECIAL FEATURES | CAN BE FURNISHED WITH BLACK OXIDE FINISH IN ACCORD W/ MIL-C-13924 CL4 IN THE LOCKING STRIP SLOT. |
| WIDTH ACROSS FLATS | 0.156 INCHES NOMINAL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924 CL4 MIL SPEC SINGLE TREATMENT RESPONSE GRIP |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924 CL4 MIL SPEC SINGLE TREATMENT RESPONSE HEAD |
| SURFACE TREATMENT | OXIDE GRIP |
| SURFACE TREATMENT | OXIDE HEAD |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.588 INCHES MINIMUM AND 0.688 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 20 |