IMSCREWS 3/8" x 1-1/4" Heavy-Duty Hex Head Lag Screws - 304 Stainless Steel (20 PCS)

Robust Structural Mounting
The 3/8" diameter provides substantial shear resistance for heavy-duty timber mounting. At 1.25 inches in length, these fasteners are ideal for securing structural brackets, joist hangers, and heavy hardware to standard boards where a secure finish is required without the tip protruding.

304 Stainless Corrosion Protection
Manufactured from 18-8 (304) stainless steel, providing effective resistance against rust in outdoor or humid environments. Compatible with ACQ pressure-treated lumber, helping to maintain structural integrity and prevent rust staining on premium wood surfaces like cedar and redwood.

Full-Thread Maximum Engagement
Featuring a fully threaded design, these bolts ensure extensive engagement with wood fibers from the tip to the head. This provides strong pull-out resistance, making them suitable for high-load mounting in shallow-depth applications where maximum grip is essential.

FAQ
¡ñ Installation Tool: Use with a standard 9/16" hex socket or wrench.
¡ñ Pre-drilling Guide: To prevent timber splitting and ensure smooth installation, pre-drilling a pilot hole is required. Use a 1/4" bit for softwoods or a 5/16" bit for hardwoods.
¡ñ Installation Tip: For smoother installation in dense wood, applying a small amount of lubricant to the threads is recommended. Use low-speed settings to avoid thread galling during high-torque application.

Specs:
- Size: 3/8" x 1-1/4"
- Thread: Fully Threaded
- Material: 304 Stainless Steel (18-8)
- Drive: 9/16" Hex Head
- Qty: 20 PCS

Key Features

• HEAVY DUTY 3/8 INCH STRUCTURE - Designed for load-bearing timber joints, these 3/8 diameter lag bolts provide the necessary shear strength for structural wood projects and industrial framing where standard screws are insufficient.
• 304 STAINLESS STEEL EXTERIOR USE - Manufactured from 18-8 (304) stainless steel, these wood bolts offer reliable protection against rust in outdoor environments, suitable for deck railings, fencing, and garden construction.
• 9/16 INCH HEX DRIVE PARAMETERS - Engineered for high-torque installation with a standard 9/16 socket or wrench. The external hex drive design ensures a secure tool fit for driving into thick or pressure-treated lumber.
• SHORT PROFILE FOR HARDWARE MOUNTING - The 1-1/4 inch length is an ideal solution for securing thick metal brackets or structural hardware to wood without the bolt tip exiting the opposite side of the timber.
• PILOT HOLE INSTALLATION GUIDE - To prevent wood splitting, a pilot hole is required. A 1/4 bit is recommended for softwoods and 5/16 for hardwoods. These fasteners are compatible with all standard wood types.

Specifications

• ASIN: B0F21D3L11
• Internal SKU: IMS0662
• Size: 3/8" x 1-1/4"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Hex
• Package Quantity: 20