| COUNTERBORE DIAMETER | 0.115 INCHES MINIMUM AND 0.120 INCHES MAXIMUM BASE |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A 582,CL 303,COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 303 OVERALL |
| NOMINAL THREAD SIZE | 0.112 INCHES |
| NUT COUNTERBORE DEPTH | 0.250 INCHES NOMINAL BASE |
| NUT HEIGHT | 0.250 INCHES NOMINAL |
| NUT STYLE | CLINCH |
| PILOT DIAMETER | 0.160 INCHES MINIMUM AND 0.165 INCHES MAXIMUM |
| SPECIAL FEATURES | TAPERED RELIEF BETWEEN BODY AND HEXAGON HEAD |
| THREAD CLASS | ZB |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 40 |
| WIDTH ACROSS FLATS | 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM |