0.275" x 4" Strong-Drive SDHR Combo-Head Screw - Zinc, Pkg 100 MST/HST Strap Ties The self-drilling #5 point is

The self-drilling #5 point is designed for penetrating thick steel without predrilling

A black phosphate finish provides light corrosion resistance and blends well with darker surfaces for a clean appearance

Designed with type 305 stainless steel for corrosion resistance

The OHU410-SDS3 ornamental joist hanger features a flat black powder-coated finish which produces a much more durable and better looking finish than standard paint

this product is ideal for indoor or dry-environment applications where corrosion resistance is not a priority

0.275" x 4" Strong-Drive SDHR Combo-Head Screw - Zinc, Pkg 100 MST/HST Strap Ties The self-drilling #5 point isThe 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.