ST Fastening #12 X 4-1/2" InsulDrill Metal Roofing Screw - Ash Gray, Pkg 100 S/HD - S/HDU Holdowns these screws offer unmatched corrosion

these screws offer unmatched corrosion resistance and structural strength

Timber Framing: Ideal for use in timber-framed structures

HVAC duct and exhaust mounting

Commercial & Industrial Construction: Ensures reliable skewed connections in large-scale structural framing

and industrial flooring systems

ST Fastening #12 X 4-1/2" InsulDrill Metal Roofing Screw - Ash Gray, Pkg 100 S/HD - S/HDU Holdowns these screws offer unmatched corrosionThe ST Fastening #12 InsulDrill Metal Roofing Screw is built to meet the demands of commercial and industrial insulation applications. Whether youre anchoring insulation boards to steel decks or securing metal panels to purlins, these screws are engineered for performance, strength, and longevity. Designed with precision threading and a sharp self drilling point, InsulDrill screws eliminate the need for pre drillingreducing labor time while delivering