0.315" x 4" Strong-Drive SDHR Combo-Head Screw - Zinc, Pkg 25 Bulk Loose Cement Board Screws 1/4-14 x 7/8" Stitch HWH

1/4-14 x 7/8" Stitch HWH Steelbinder self-drilling pole barn screws are designed for general metal to metal construction applications

Heavy-Gauge Steel Construction: Built for high-strength load-bearing performance

Non-Expansive Tip Design: Helps prevent cracking in close-to-edge and reduced spacing applications

Sure-grip guide tube increases stability with shorter screws

Material and Finish: Made from 316 Stainless Steel for durability

0.315" x 4" Strong-Drive SDHR Combo-Head Screw - Zinc, Pkg 25 Bulk Loose Cement Board Screws 1/4-14 x 7/8" Stitch HWHThe Simpson Strong Tie Strong Drive SDHR Combo Head Screw is made for serious wood projects like cross laminated timber (CLT), mass timber, and other big framing jobs. The unique combo head design gives you flexibility, with a choice to drive it with either a hex bit or a T40 6 lobe bit. A knurled shank helps lock the screw in place, and the sharp Type 17 point starts fast, reduces driving torque, and often eliminates the need for predrilling.