Grisham 4 in. One-Way Screws for Security Bar Window Guard (4-Pack)

The Grisham 4 in. one-way screw (4-pack) features a black powder-coated finish for weather durability. For use with all Grisham spearpoint window bar mounting brackets or fastener applications where possible tampering could occur. The non-reversing safety screw design inhibits removal of the fastener.

• Helps to install Grisham window bar mounting brackets
• Compatible with most security applications resisting tampering
• Non-reversing design restricts removal by intruders