| HEAD HEIGHT | 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM |
| HEAD STYLE | KNURLED NO. 1 |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-626 COMP 22 1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.843 INCHES MINIMUM AND 0.907 INCHES MAXIMUM |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| FASTENER LENGTH | 1.234 INCHES MINIMUM AND 1.266 INCHES MAXIMUM |
| FIRST DIAMETER FROM HEAD | 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM |
| HEAD DIAMETER | 0.433 INCHES MINIMUM AND 0.443 INCHES MAXIMUM |
| MATERIAL | COPPER ALLOY 360 OVERALL |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| POINT STYLE | CONE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633,TY 1 CL 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |