Simpson #9 x 1-1/4 in. Collated Fiber-Cement Board Screw High-Low Thread C-3 Galv 1500-Pk Stud Shoes 130 is a pair of

130 is a pair of 40mm profile knives profile knives for the CMT Insert Shaper System

What is the purpose of the high-low thread design on this screw

Reduced Reveal: Screw-based fastening system minimizes the exposed hardware profile at the base of the column

What is the purpose of the Simpson ABL6-1 anchor bolt locator

Material Solid Carbide (Tungsten Carbide)

Simpson #9 x 1-1/4 in. Collated Fiber-Cement Board Screw High-Low Thread C-3 Galv 1500-Pk Stud Shoes 130 is a pair ofSimpson CB3BLGHL Fiber Cement Board Screw (Collated) #9 x 1 1 4 in., #3 Square Drive, C 3 Mechanically Galvanized, 1,500 Quantity by Simpson is engineered specifically for cement board to wood applications involving coarse, porous, and softer materials. This collated screw is designed for use with the Quik Drive PROLDHG2 underlayment backerboard system, delivering a clean, concealed finish through its countersinking design making it a reliable choice