SPAX PowerLags 4581821001525 Lag Screw, 3/8 in Thread, 6 in L, Partial Thread, Washer Head, T-Star D

SPAX PowerLags offer the largest selection of code-recognized structural wood-to-wood fasteners in the industry. Featuring SPAX patented thread technology, they require no pre-drilling and drive faster and easier than conventional lags and other structural lag screws. HCR high corrosion-resistant coating option for use in interior or exterior applications, including treated lumber.