| FASTENER LENGTH | 6.000 INCHES NOMINAL |
| HARDNESS RATING | 60.0 ROCKWELL B MINIMUM OVERALL |
| HEAD HEIGHT | 0.186 INCHES MINIMUM AND 0.220 INCHES MAXIMUM |
| HEAD STYLE | SQUARE |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 2 STYLE AND B GRADE |
| NONMACHINE NOMINAL THREAD DIAMETER | 0.312 INCHES |
| NONMACHINE THREAD STYLE | GIMLET POINT (TYPE A, AB OR BA) |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A-307,GR A ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| MINIMUM TENSILE STRENGTH | 55000 POUNDS PER SQUARE INCH |
| WIDTH BETWEEN FLATS | 0.484 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |