Heavy-Duty Heat-Treated One-Way Lag Screw 5/16 x 3 for Maximum Security Mounting in Safes, Security Gates, Public Restroom Fixtures and Enclosures, Hardened to Prevent Breakage, Slotted Drive for Easy Install Black Hillman

Heavy-Duty One-Way Lag Screws 5/16 x 3 for Secure Mounting
✔️ Heat-treated steel, hardened, slotted drive, 50 pcs, 5/16x3 in (7.94x76.2 mm) black

Heavy-duty one-way lag screws are designed for high-security mounting where removal with standard tools isn’t feasible. They’re ideal for safes, security gates, public restroom fixtures and enclosures, and other tough installations requiring added tamper resistance. For best results, use in a pre-drilled hole to prevent snapping and ensure solid seating.

✅ Heavy-duty one-way lag screws for security-grade mounting in wood or with lag shields
✅ Heat-treated steel resists bending and snapping for long-term use
✅ Slotted drive enables easy installation with a standard screwdriver
✅ 5/16 in diameter x 3 in length (7.94 mm x 76.2 mm); black finish
✅ Pack of 50 screws for bulk installs across multiple fixtures

💡 What is a heavy-duty one-way lag screw used for in security mounting?

These screws are handy for securing hardware in spaces where tampering is a concern, like safes, gates, and public fixtures. They are designed to resist removal with ordinary tools and require an extraction tool if removal is needed.

• handy for keeping fixtures from being removed by tampering
• requires extraction tool for removal to deter unauthorized disassembly
• pre-drilled holes help prevent wood splitting during installation
• works with lag shields for stable anchoring in wood or masonry