"IMSCREWS 3/8 x 6 Extreme-Duty Lag Bolts - 304 Stainless Steel (2 pcs)

Ultimate Reach for Massive Timber Structures
When your project involves the thickest structural beams, these 6-inch lag bolts provide the necessary reach. Engineered for deep-core penetration in 6x6 posts, retaining walls, and heavy marine dock framing. The 3/8 diameter ensures elite shear resistance for the most demanding load-bearing connections.

Vise-Like Clamping with Partial Threading
Our partially threaded shank is vital for fasteners of this length. It allows the bolt to spin freely in the outer timber while the deep threads bite into the base beam. This draws massive wood members together into a gap-free joint, eliminating the bridging effect where thick boards remain loose—a common failure in extra-long full-thread screws.

304 Stainless Exterior Defense
Forged from premium 18-8 (304) Stainless Steel for ultimate weather resistance. compatible with ACQ pressure-treated lumber. It prevents chemical corrosion and eliminates unsightly rust streaks on high-value cedar, redwood, or heavy structural framing.

Technical FAQ
¡ñ Tools Required: Fits a standard 9/16 hex socket or wrench.
¡ñ Pre-drilling: Mandatory for this extreme diameter and length. Use a 1/4 bit for softwoods or 9/32 bit for hardwoods.
¡ñ Why 6 length? Optimized for passing through 3.5 or 4 timber with a strong 2-inch thread anchor in the support post.
¡ñ Resilience: Rated for marine, coastal, and high-humidity environments.

Specifications:
- Size: 3/8 x 6
- Thread: Partially Threaded (Max Clamping)
- Material: 304 Stainless Steel (18-8)
- Drive: 9/16 Hex Head
- Qty: 2 pcs"

Key Features

• ELITE CLAMPING FORCE The engineered partial thread allows the smooth shank to bypass thick outer members, focusing all thread power on the support timber to draw joints tightly together.
• MAXIMUM SHEAR RESISTANCE The massive 3/8-inch diameter and 6-inch reach provide elite structural strength for heavy pergolas, deck main frames, and oversized timber nodes.
• DEEP-CORE 304 STABILITY Premium 304 (18-8) stainless steel prevents deep-seated rot and rust bleeding in cedar, redwood, or ACQ pressure-treated lumber.
• INDUSTRIAL DRIVE INTERFACE Precision hex head ensures a secure 9/16 socket fit, offering stable torque transfer for controlled seating in dense, extra-thick timber.
• TECHNICAL SPECIFICATION To prevent timber splitting from this robust 3/8 bolt, pre-drilling a full-depth pilot hole (1/4 for softwoods, 9/32 for hardwoods) is mandatory.

Specifications

• ASIN: B0F21CWGYV
• Internal SKU: IMS0687
• Size: 3/8" x 6"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Hex
• Package Quantity: 2