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

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

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

Always use all specified fasteners to achieve the rated allowable loads

Material Solid Carbide (Tungsten Carbide)

Dowel drill with M10 threaded shank for direct mounting to multi-spindle boring machines without an adapter

Simpson #9 x 1-1/4 in. Collated Fiber-Cement Board Screw High-Low Thread C-3 Galv 1500-Pk Stud Shoes What is the purpose 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