| FASTENER LENGTH | 32.77 MILLIMETERS NOMINAL AND 32.27 MILLIMETERS MAXIMUM |
| HEAD HEIGHT | 2.29 MILLIMETERS MINIMUM AND 2.79 MILLIMETERS MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | BS S154 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | FITTED BOLT |
| NOMINAL THREAD DIAMETER | 0.3125 INCHES |
| WIDTH BETWEEN FLATS | 10.95 MILLIMETERS MINIMUM AND 11.13 MILLIMETERS MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ZINC-NICKEL ALLOY MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC ALLOY OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 5.21 MILLIMETERS NOMINAL |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNF |