8 1 4 20 July 8, 2019 16 32 64 128 3 8 1 4 20 5 8 1 4 20 (- 8 2 4 1 )(- 20 1 4 20x5 8 1 4 20x3 8 1 4 20x7 8 Qsl b 1 8 4 20 Qs b 1 8 4 20 3 8 16 to 1 4 20 Grade 8 1 4 20 bolts Grade 8 1 4 20 torque spec Grade 8 1 4 20 3 8 1 4 20 screw Grade 8 1 4 20 shear strength
