Hillman 3/8 in. x 1 in. Hot-Dipped Galvanized Steel Carriage Bolts, 100-Pack Hand-Drive Nails 3-mm glue-down plank features a

3-mm glue-down plank features a durable 22‑mil wear layer and low-gloss finish

Q: What head style do they use

Corrosion-Resistant Zinc Plating: Provides moderate protection against rust

Coarse SAE Threads: Easy engagement and holding power for general-purpose builds

Hillman 3/8 in. x 1 in. Hot-Dipped Galvanized Steel Carriage Bolts, 100-Pack Hand-Drive Nails 3-mm glue-down plank features aHillman Hot Dipped Galvanized 3 8 in. x 1 in. Carriage Bolts (100 Pack) Heavy duty carriage bolts for fastening wood to wood or metal. Made of alloy steel with a hot dipped galvanized finish for superior corrosion resistance, featuring a smooth, domed head and square neck to lock into material without a washer. Key Features: Hot Dipped Galvanized Protection: Resists rust and corrosion for outdoor builds and treated lumber Secure Locking Design: Square