https://www.acehardware.com/departments/hardware/screws-and-anchors/construction-screws/5049423
SPAX PowerLag 1/4 in. in. X 2-1/2 in. L T-30 Washer Head Serrated Structural Screws Mfr#...
Spax Powerlags offer the largest selection of code-recognized structural wood-to-wood fasteners in the industry. Featuring Spax patented thread technology,...