Recoil 75127 Heavy-Duty Key Locking Insert, Internal M12 x 1.75, Class 6H, External M18 x 1.5, Class 6G, 303 SST W/ 302

Recoil Heavy-Duty Key Locking Insert, Style: Locking, Unit of Measure: Metric, M12 x 1.75 Internal Thread, 6H Internal Thread Class, M18 x 1.5 External Thread, 6G External Thread Class, Body Material Detail: 303 Stainless Steel with 302 Stainless Steel Keys Material, Finish Detail: Passivated, 18 mm Body Length, Recommended Installation BA-72500, Tap Drill Size: 16.75 mm, 18.25 mm Counter Sink Diameter, M18 x 1.5 Thread Tap Size, 6H Thread Tap Class, 20.50 mm Min Thread Tap Depth, 15.50 mm Removal Drill Size, 4-3/4 mm Removal Drill Depth