| FASTENER LENGTH | 0.290 INCHES MINIMUM AND 0.330 INCHES MAXIMUM |
| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | HEADLESS (SETSCREW) |
| INTERNAL DRIVE STYLE | HEXAGON |
| LOCKING FEATURE | PELLET THREADS |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 4130 OR STEEL COMP 4135 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 5130 OR STEEL COMP 5132 OR STEEL COMP 5135 OR STEEL COMP 5140 OR STEEL COMP 8630 OR STEEL COMP 8637 OR STEEL COMP 8640 OVERALL |
| NOMINAL THREAD DIAMETER | 0.138 INCHES |
| POINT STYLE | CUP |
| WIDTH ACROSS FLATS | 0.062 INCHES MINIMUM AND 0.063 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 2A |
| THREAD LENGTH | 0.290 INCHES MINIMUM AND 0.330 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNC |
| THREAD QUANTITY PER INCH | 32 |