Simpson Strong-Tie 3/8-in x 6-in Hot-Dipped Galvanized Strong-Drive SDWH Timber-Hex Exterior Wood Screws (30-Per Box) in the Wood Screws department at Lowes.com
Amazon.com: (5) 12" - Zinc Coated Rust Resistant Timber Tie - Heavy Duty Hex Head Structural Screw - 5/8" Wide Flange Head with coarse Thread for Secure Hold - Heavy Duty 3/16"
10) 14" - Galvanized Timber Tie - Hex Head Structural Screw - Great for Outdoor Landscape use - Coarse Thread
TIMCO Heavy Duty Timber Screws Hex Flange Head Exterior Silver - 8.0 x 100 - Bag of 10 | Timco Stock
Otter Heavy Duty Timber Screws - Screws | Mitre 10™
9" Log & Timber Screws - OlyLog – Log Home Mart
Buy the OMG FMTLOK08-250 Timberlok Wood Screws - Heavy Duty ~ 8" . | Hardware World
14 X 6" Heavy Duty Black Timber/log/landscaping Wood Screws Exterior Coated Heav | eBay
FastenMaster TimberLOK 4 in. Structural Wood Screw (50 Pack) FMTLOK04-50 - The Home Depot
FastenMaster TimberLOK 6 in. Structural Wood Screw (50 Pack) FMTLOK06-50 - The Home Depot
Amazon.com: (10) 12" - Zinc Coated Rust Resistant Timber Tie - Heavy Duty Hex Head Structural Screw - 5/8" Wide Flange Head with coarse Thread for Secure Hold - Heavy Duty 3/16"