Our Construction Lag Screws are Strong - Can be Removed and Reused. Construction Lag Screws Far Exceed Standard Lag Bolts in Shear Compression Forces Torx/Star Drive Wood Screw Head Provides Twice the Torque of Phillips or Square Drive Screw Heads. 17 x 8 Big Timber CTX T-40 Star Drive Construction Screw - 25 per Pack | K.L. Jack Big Timber CTX Construction Screws are heat-treated and hardened, making them more durable than ordinary screws and a superior alternative to traditional Lag screws Our Bronze Star Torx/Star Drive Screws are an Excellent Fastener for Many Applications in Hard and Soft Woods, Chipboard, and Tough Materials. Our Exterior Coated Construction Lag Wood Screws are an Rugged Multipurpose Fastener for Professional Operations and Demanding Industries. Corrosion Resistant Lag Screws Passed the 1200 Hour Salt Spray Test Without Coating Failures With a ~3/8 Construction Lag Screw Thread Diameter and Modified Truss 11/16 Head Diameter for Better Compression. Screw Engineering Specs:Average Shear Strength of #17 Shank --- 1,367 lbfAverage Pull-Out Strength ---- 4 - 1065 lbf (Thread Length)(Screw Pull-Out is Calculated by Screws installed in the Side Grain of a Main Member - Southern Pine) Our Exterior Coated Construction Lag Wood Screws are an Excellent Multipurpose Fastener for Professional Operations & Demanding Industries. Our Construction Lag... Manufactured from High Quality Heat Treated Steel, Triple Coated, ACQ Treated Lumber Compatible Lag Screws Jake Sales #17 X 8 Construction Lag Screw Exterior Coated Torx/Star Drive Heavy Duty Structural Lag Screw Far Superior To Common (50 Screw Count) Modified Truss Washer Head Torx Drive Heavy Duty Lag Screws