FMhotu #9 x 1-1/2" Heavy Duty Joist Hanger Screws, 500Pcs Structural Connector Screws, 1/4" Hex Head+T20 Star Bit, 10D Nail Replacement, Zinc-Aluminum Flake Coating, 1500-Hour Salt Spray Tested

#9 x 1-1/2” Deck Screws, 500Pcs Silver

• Unique Design: Unlike conventional screws, our structural screws feature integrated serrated washer teeth beneath the head to enhance the tight contact with wood and prevent loosening. Additionally, specially engineered crack-prevention ribs in the middle section of the shank effectively reduce the risk of wood splitting during installation.
• Controlled Installation: Our joist hanger screws adopt dual-drive design with 1/4" hex head and T20 star drive, compatible with all standard drills and impact drivers. Delivers faster installation, better torque transfer and more precise fastening than hammer-driven nails. The T20 star drive prevents cam-out (screw head stripping) under high torque.
• 1500-Hour Salt Spray Tested: Featuring an innovative 4-layer corrosion protection system with premium zinc-aluminum flake coating, these structural connector screws deliver far superior rust resistance compared to standard single-layer galvanized screws. Perfect for all indoor and outdoor wood construction applications.
• Widely Applied: Our hex head joist hanger screws fit multiple connection uses. Suitable for indoor wooden floors, furniture, picture frames and light fixtures, as well as outdoor decks, fences, docks and timber constructions, delivering sturdy, stable fastening performance.
• Worry-Free After-Sales Service:Feel free to contact us if you have any questions or needs during use. We promise a prompt response within one business day and are dedicated to resolving your issues efficiently.