| FASTENER LENGTH | 0.750 INCHES NOMINAL |
| HARDNESS RATING | 33.0 ROCKWELL C NOMINAL OVERALL |
| HEAD DIAMETER | 0.563 INCHES MINIMUM AND 0.594 INCHES MAXIMUM |
| HEAD HEIGHT | 0.125 INCHES MINIMUM AND 0.145 INCHES MAXIMUM |
| HEAD STYLE | OVAL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLTS, ROUND, SQUARE NECK (SQUARE NECK CARRIAGE BOLTS) |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE J429 - GRADE 8 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
| NECK LENGTH | 0.160 INCHES NOMINAL |
| NECK WIDTH | 0.237 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SPECIFICATION/STANDARD DATA | 05047-ASME B18.24-2020 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM F1941,ZINC COATING FE/ZN,TRIVALENT CHROMATE,TY 5CT NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CHROMATE ZINC OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.590 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 20 |