SPAX 4581820701555 Lag Screw, 1/4 in Thread, 4-1/2 in L, Partial Thread, Washer Head, Star Drive, Ca

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.