"IMSCREWS 3/8 x 3 Heavy-Duty Lag Screws - 304 Stainless Steel (10 pcs)

The Structural Standard for Timber Framing
When your project demands superior holding power and deep-reach anchoring, these 3/8 diameter bolts deliver. Perfect for securing deck framing, heavy fence rails, or mounting structural brackets to 4x4 posts. The 3-inch length provides the ideal balance of penetration and stability for multi-layered timber.

Vise-Like Clamping with Partial Threading
Our partially threaded shank features a smooth upper section that allows the bolt to pull the outer board tightly against the support beam. This eliminates gaps and creates a rock-solid, vibration-resistant connection that full-thread screws cannot match in deep-reach applications.

304 Stainless Exterior Defense
Forged from premium 18-8 (304) Stainless Steel for ultimate weather resistance. compatible with ACQ pressure-treated lumber, preventing chemical corrosion and ensuring no unsightly rust streaks will ruin your high-value cedar or redwood projects.

Technical FAQ
¡ñ Tools Required: Fits a standard 9/16 hex socket or wrench.
¡ñ Pre-drilling: Mandatory for this diameter. Use a 1/4 bit for softwoods or 9/32 bit for hardwoods to prevent splitting.
¡ñ Why 3 length? Perfect for passing through 1.5 timber with a strong 1.5 deep-core thread anchor in the base post.
¡ñ Environment: Rated for marine, coastal, and high-humidity outdoor use.

Specifications:
- Size: 3/8 x 3
- Thread: Partially Threaded (Max Clamping)
- Material: 304 Stainless Steel (18-8)
- Drive: 9/16 Hex Head
- Qty: 10 pcs"

Key Features

• MAXIMUM CLAMPING PULL The partially threaded design ensures the smooth shank passes through the outer board, allowing threads to pull timber members together with immense force for a gap-free joint.
• INDUSTRIAL SHEAR RATING The robust 3/8-inch solid steel core offers elite lateral load capacity, making it the professional choice for heavy 4x4 posts, beams, and structural framing.
• 304 STAINLESS STABILITY Forged from premium 304 (18-8) stainless steel to inhibit oxidation in wood joints. Fully compatible with ACQ pressure-treated lumber for high-moisture exterior use.
• STRUCTURAL GUIDELINE To ensure joint integrity and prevent timber splitting, pre-drilling a pilot hole (1/4 for softwoods, 9/32 for hardwoods) is mandatory for this 3/8 bolt.
• Rust-Resistant — The stainless steel construction offers excellent protection against rust and corrosion, making these screws ideal for use in outdoor or marine environments.

Specifications

• ASIN: B0F218HPZW
• Internal SKU: IMS0674
• Size: 3/8" x 3"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Hex
• Package Quantity: 10