Use these to fix some boards on the dock and they work much better than regular deck screws. One didn't have the square die cut so we couldn't use it.
POWERTEC 4 Inch 20 2 Inch QTB1005 T Slot: A Revolutionary, High-Quality Power Tool Accessory!
8 Review
πͺ Strong and Versatile: National Hardware N222 406 Square Bolts for Secure Fastening
7 Review
Premium Eapele 4X4 Wood Fence πͺ΅ Post Anchor Base: Secure Your Fence with Ease
8 Review
Highly π Sought-After Fastener: Connector 014973445713
9 Review