| FASTENER LENGTH | 1.835 INCHES MINIMUM AND 1.875 INCHES MAXIMUM |
| HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD DIAMETER | 0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM |
| HEAD HEIGHT | 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| HOLE CONFIGURATION STYLE | ROUND INTERNAL HEXAGON |
| HOLE DIAMETER | 0.044 INCHES MINIMUM AND 0.050 INCHES MAXIMUM |
| HOLE TYPE | DRILLED |
| HOLE QUANTITY | 6 |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL | STEEL OVERALL |
| MINIMUM YIELD STRENGTH | 155000 POUNDS PER SQUARE INCH |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| SPECIFICATION/STANDARD DATA | 80205-NAS1351 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.125 INCHES MINIMUM |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNRF |
| WIDTH ACROSS FLATS | 0.250 INCHES MINIMUM AND 0.253 INCHES MAXIMUM |