Simpson Strong-Tie SDHR27400 Strong-Drive® SDHR COMBO-HEAD Screw — 0.275 in. x 4 in., Blue Zinc (100-Qty)

Simpson Strong-Tie SDHR27400

•Designed for use with steel side plates. Can be driven by either a hex-head or 6-lobe driver bit
•Heavy-duty, partially-threaded shaft with knurl provides strength, with superb pull-out resistance. Type-17 point ensures fast starts, reduces installation torque and eliminates the need for predrilling in most applications
•Deep T40, 6-lobe recess for a secure drive (replacement bit: BIT40T-134). Interior grade blue-zinc coating
•Shank diameter: 0.275 in. Length: 4 in. (100 mm)
•Thread length: 2.15 in. Quantity: 100

Simpson Strong-Tie SDHR27400

The Strong-Drive SDHR Combo-Head screw is a structural fastener designed for cross-laminated timber construction, mass timber construction and general interior applications. These partially-threaded, sturdy 0.394-in. and 0.472-in. diameter structural fasteners are designed to pull structural members together while providing excellent connection strength. The unique “combination” head allows for effortless driving using either a hex driver bit or T40 6-lobe driver bit. The SDHR Combo-Head has an interior-grade, blue-zinc coating, a robust knurled shaft and Type-17 point for fast starts and low-torque driving.