Polylok's threaded septic tank inserts are precision die-cast of zinc alloy with excellent resistance to...

Polylok's threaded septic tank inserts are precision die-cast of zinc alloy with excellent resistance to atmospheric conditions. These septic tank inserts are specifically suited for use in precast concrete elements and these septic tank inserts can be quickly and easily secured to the form. Polylok septic tank inserts are excellent for securing machinery and equipment, for suspending piping and supporting railing/poles.

Threaded septic tank Inserts Locators are now available in five sizes! 1/4'', 3/8'', 1/2'', 5/8''...

Threaded septic tank Inserts Locators are now available in five sizes! 1/4'', 3/8'', 1/2'', 5/8'' and 3/4''. Polylok’s new threaded septic tank inserts locator revolutionizes the installation of all plastic and metal septic tank inserts. Our inserts shear off when the casting is stripped, never leaving an exposed hole or exposed threads. Just thread the locator into the septic tank inserts, then tap the insert into the pre-drilled 3/8'' hole and that's it! The hole will self seal allowing you to drill as many holes as needed without compromising form integrity.

Patent No # 6,789,776