#8 x 1-1/8" Flat Head Type 17 Wood Screws w/Nibs - Zinc, Pkg 10000 ST Fastening Metal Roofing Screws The Simpson Strong-Tie PT-27 is

The Simpson Strong-Tie PT-27 is a semi-automatic powder-actuated tool that's designed for high reliablility and low maintenance

Lumber Size: Intended for use with 3-1/8x beams and 6x posts/columns

and minimal installation torque

5-inch diameter lally columns and Quad 2x10/12 girders

#8 x 1-1/8" Flat Head Type 17 Wood Screws w/Nibs - Zinc, Pkg 10000 ST Fastening Metal Roofing Screws The Simpson Strong-Tie PT-27 isDaggerz brand type 17 wood screws are a high quality screw designed for general wood fastening applications. A type 17 point eliminates pre drilling and cuts into the wood for faster and easier installation when compared to traditional sharp points. Nibs under the head allow the screws to self countersink and sit flush in the wood. These screws work great in most woods, including hardwoods and plywoods.