| FASTENER LENGTH | 0.345 INCHES MINIMUM AND 0.365 INCHES MAXIMUM |
| HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| HOLE CONFIGURATION STYLE | HEXAGON FLATS |
| HOLE DIAMETER | 0.041 INCHES NOMINAL |
| HOLE QUANTITY | 1 |
| HOLE TYPE | DRILLED |
| INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP E4340 OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| POINT LENGTH | 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM |
| POINT STYLE | DOG |
| POINT DIAMETER | 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.302 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 1,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 2A |
| THREAD LENGTH | 0.285 INCHES MINIMUM AND 0.325 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 28 |