0.315" x 4" Strong-Drive SDHR Combo-Head Screw - Zinc, Pkg 25 Bulk Loose Cement Board Screws and metal buildings

and metal buildings

Type 316 stainless steel - for maximum corrosion resistance in tough outdoor conditions

G90 Galvanized Coating: Provides corrosion resistance suitable for indoor and dry-use environments

the SUL hanger ensures a strong

chemical-exposed

0.315" x 4" Strong-Drive SDHR Combo-Head Screw - Zinc, Pkg 25 Bulk Loose Cement Board Screws and metal buildingsThe 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.