8x TIMCO Throughbolts Zinc 10100TBP Pack of 2

ManoMano

General description A versatile, torque controlled through fixing for use in a wide range of anchoring applications into concrete. Installation If no torque wrench is available, tighten the nut 3 to 4 full turns from finger tight.

Amazon

Ready assembled complete with expansion clip for rapid installation Chamfered head design to prevent damage to thread during installation Cold formed Carbon Steel - Grade 5.8 Zinc plated and passivated