Simpson, Strong-Tie #9 x 1-1/2in. Structural Screws, Included (qty.) 500, Model# SD9112R500 | Northern Tool
17 X 4" Heavy Duty Structural Wood Screws - Exterior Coated Heavy Duty Wood Screws - Use for Fastening Ledger Boards, Large Timbers, Logs and More (50 Approx. Screw Count): Amazon.com: Industrial & Scientific
10 1-1/2in Structural Screw 100ct – Buildcorp Direct
Structural Screws vs. Lag Bolts Screws (DIY) | Family Handyman