This Micro Matic Tower Lock Nut is made out of brass and it is primarily meant to be used with tower shanks. Use this lock nut in conjunction with a inner column faucet spacer to mount a faucet to your draft beer tower. Simply insert the shank into the existing hole on the tower, and thread the lock nut onto the inside to mount the shank and attach your faucet. The threading is 7/8"-14 (5/8" BSPP).Compatible With: Micro Matic Stainless Steel Beer Tower - Single Faucet [D4743T] Micro Matic Stainless Steel Wine Tower - Single Faucet [D4743T-W] Micro Matic PVD Gold Coated Brass Beer Tower - Single Faucet [D4743T-PVD] Micro Matic Stainless Steel Beer Tower - Double Faucet [D4743DT] Micro Matic Stainless Steel Wine Tower - Double Faucet [D4743DT-W] Micro Matic Stainless Steel Shotgun Beer Tower - Double Faucet [D4743SGPSS] Micro Matic PVD Gold Coated Brass Beer Tower - Double Faucet [D4743DT-PVD] Micro Matic Stainless Steel Beer Tower - Triple Faucet [DS-133-PSS] Micro Matic Stainless Steel Wine Tower - Triple Faucet [DS-133-PSS-W] Micro Matic Stainless Steel "T" Beer Tower - Triple Faucet [D7743PSS] Micro Matic Stainless Steel "T" Beer Tower - Four Faucet [D7744PSS] Micro Matic Stainless Steel "T" Wine Tower - Four Faucet [D7744PSS-W] Micro Matic Stainless Steel "T" Beer Tower - Five Faucet [DS-355-PSS] Micro Matic Stainless Steel "T" Beer Tower - Six Faucet [DS-356-PSS] Micro Matic Stainless Steel "T" Beer Tower - Eight Faucet [DS-358-PSS-3] Thread Type*: British Standard Pipe (BSP)*BSP and NPT/NPS threads are NOT compatible with each other. When purchasing threaded hardware, it's crucial to verify that you are selecting the appropriate threaded fittings to meet your requirements.Specifications: Made out of Brass 7/8"-14 (5/8" BSPP) Connection