This 3/8 x 4 inch lag screw is hot-dip galvanized for increased corrosion resistance in exterior and damp environments. Manufactured from steel, these screws provide secure fastening in wood and other soft materials. The hot-dip galvanization process creates a thick, durable zinc coating that protects the base metal from rust and extends service life compared to plain or electro-galvanized options, making it suitable for outdoor structural applications.
Used for anchoring heavy fixtures, framing, and timber structures outdoors or in high-humidity indoor areas. The coarse thread provides strong engagement in wood, resisting pull-out over time. The zinc coating weathers slowly, providing sustained protection against moisture and environmental exposure.
Specifications
- Material / grade: Steel
- Size: 3/8 x 4 in
- Finish: Hot-dip galvanized
- Pack quantity: 50
- Head type: Hex
In stock. Ships same day on orders placed before 3:00 pm CT. 30-day returns on unused stock
in original packaging.





