| CRITICALITY CODE JUSTIFICATION | FEAT |
| FASTENER LENGTH | 1.172 INCHES MINIMUM AND 1.204 INCHES MAXIMUM |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM |
| HEAD STYLE | HEADLESS (SETSCREW) |
| INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758,COND C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4130 OVERALL |
| MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| POINT LENGTH | 0.046 INCHES MINIMUM AND 0.078 INCHES MAXIMUM |
| POINT CHAMFER ANGLE | 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM |
| SPECIAL FEATURES | UNTHD PORTION OF SHANK 0.094 IN. LG,0.549 IN. DIA |
| WIDTH BETWEEN FLATS | 0.609 INCHES MINIMUM AND 0.641 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 CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.062 INCHES MINIMUM AND 1.126 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNF |