Spax Washer Head Power Lags (HCR) - 5/16" x 3" - larger surface area under the head (compared to hex head lags) for superior wood to wood or metal to wood fastening. Available in contractor boxes or bulk pails. Features include.........

• Contractor box (50pc)
• Partial thread
• Hardened steel (grade 5)
• See spec chart for shear strength
• High corrosion resistance coating (HCR, "green") - salt spray resistance of 750hrs
• ACQ approved
• Does not require pre-drilling
• Torx drive (1/4"=T30, 5/16"=T40, 3/8"=T50)
• Made in USA