| FASTENER LENGTH | 0.720 INCHES MINIMUM AND 0.770 INCHES MAXIMUM |
| HEAD HEIGHT | 0.274 INCHES MINIMUM AND 0.298 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | CASE HARDENED ZINC FLANGE BOLT |
| MATERIAL | STEEL OVERALL |
| MINIMUM TENSILE STRENGTH | 120000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.313 INCHES |
| SHOULDER DIAMETER | 0.666 INCHES MINIMUM AND 0.706 INCHES MAXIMUM OVERALL |
| SHOULDER SHAPE | ROUND OVERALL |
| WIDTH BETWEEN FLATS | 0.491 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM F1941, FE/ZN 3A ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.720 INCHES MINIMUM AND 0.770 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |