| FASTENER LENGTH | 5.900 INCHES MINIMUM AND 6.000 INCHES MAXIMUM |
| HARDNESS RATING | 60.0 ROCKWELL B MINIMUM OVERALL |
| HEAD HEIGHT | 0.232 INCHES MINIMUM AND 0.268 INCHES MAXIMUM |
| HEAD STYLE | SQUARE |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A307-68 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MINIMUM TENSILE STRENGTH | 55000 POUNDS PER SQUARE INCH |
| NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND 2 STYLE AND B GRADE |
| NONMACHINE NOMINAL THREAD DIAMETER | 0.375 INCHES |
| SHOULDER DIAMETER | 0.360 INCHES MINIMUM AND 0.388 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 0.125 INCHES MINIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| WIDTH BETWEEN FLATS | 0.544 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |