| FASTENER LENGTH | 0.105 INCHES MINIMUM AND 0.145 INCHES MAXIMUM |
| HARDNESS RATING | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | HEADLESS (SETSCREW) |
| INTERNAL DRIVE STYLE | SIX SPLINE |
| MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4140 OVERALL |
| NOMINAL THREAD DIAMETER | 0.086 INCHES |
| POINT STYLE | CUP |
| SPLINE MINOR DIAMETER | 0.040 INCHES MINIMUM AND 0.041 INCHES MAXIMUM |
| SPLINE WIDTH | 0.020 INCHES MINIMUM AND 0.026 INCHES MAXIMUM |
| SPLINE MAJOR DIAMETER | 0.049 INCHES MINIMUM AND 0.050 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 56 |