Prime-Line 9056372 Hex Lag Screws, 3/8 in. X 4 in., A307 Grade A Zinc Plated Steel (50 Pack)

Prime‑Line lag screws provide heavy‑duty fastening strength for securing structural components in home improvement and repair projects. Designed with coarse wood threads and a hex head, these screws deliver strong holding power in wood‑to‑wood and wood‑to‑masonry applications when used with appropriate anchors. Ideal for decks, fencing, handrails, ledgers, outdoor furniture, garages, and utility installations, Prime‑Line lag screws install easily using standard wrenches or sockets and eliminate the need for a nut. For added stability and surface protection, they are recommended for use with same‑size matching washers. Manufactured from quality materials for durability and corrosion resistance, Prime‑Line lag screws perform reliably in both indoor and outdoor environments. Trusted by DIY homeowners and professionals across the U.S., Prime‑Line lag screws make it easy to complete demanding projects with confidence and lasting strength.

• Size: 3/8 inch X 4 inch
• Heavy duty wood screw with 6 sided hex bolt head
• Features deep wood screw threads and does not accept a nut
• Used in applications where standard wood screws cannot support the load (deck building, etc.)
• Requires pilot hole to be drilled and installs using wrench or socket tool