SPAX PowerLags 4571820801005 Hex Washer Bolt, 4 in OAL, 5 Grade, HCR Coated

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 coating options for use in interior and exterior applications, including treated lumber.