IMSCREWS 5/16 x 5 Hex Head Lag Screws, 304 Stainless Steel, Partially Threaded Extra-Long Wood Bolts for Heavy Timber Framing, 5 pcs

"IMSCREWS 5/16 x 5 Heavy-Duty Lag Screws - 304 Stainless Steel (5 pcs)

Extreme Reach for Massive Timber Projects
Our 5-inch lag bolts are engineered for the most demanding structural applications. The 5/16 diameter provides professional-grade shear resistance, making these the ideal choice for anchoring heavy landscape timbers, large pergolas, or mounting multi-layered structural beams to 6x6 posts.

Vise-Like Clamping Power
Our partially threaded shank features a smooth upper section that allows the bolt to pull the outer timber tightly against the support structure. This creates a gap-free, rock-solid joint, eliminating the bridging effect common in extra-long full-thread screws for a professional-grade finish.

304 Stainless Weather Protection
Forged from premium 18-8 (304) stainless steel for elite rust protection in outdoor and humid environments. compatible with ACQ pressure-treated lumber. Prevents unsightly rust streaks on high-value cedar, redwood, or premium deck framing.

FAQ
¡ñ Tools: Fits a standard 1/2 hex socket or wrench.
¡ñ Pre-drilling: Mandatory for this length. Use a 3/16 bit for softwoods or 7/32 bit for hardwoods to prevent timber splitting.
¡ñ Why 5 length? Optimized for passing through 3 or 3.5 thick timber with a deep 1.5 + thread anchor in the base post.

Specs:
- Size: 5/16 x 5
- Thread: Partially Threaded (Max Clamping)
- Material: 304 Stainless Steel
- Drive: 1/2 Hex Head
- Qty: 5 pcs"

Key Features

• ULTIMATE CLAMPING POWER Engineered with a partial thread to allow the shank to bypass thick outer members, pulling heavy timbers together for a gap-free, permanent structural bond.
• EXTRA-LONG REACH The 5-inch reach is designed for maximum penetration in multi-layer beams and posts, providing professional-grade withdrawal resistance.
• 304 WEATHER SHIELD Forged from premium 304 (18-8) stainless steel to endure humid timber cores and prevent rust staining in cedar, redwood, or ACQ lumber.
• HIGH-TORQUE DRIVE Robust hex head ensures a secure 1/2 socket fit, providing stable torque transfer for controlled seating in extra-thick dense timber.
• TECHNICAL SPECIFICATION To prevent splitting and protect the 5/16 shaft, pre-drilling a pilot hole (7/32 for softwoods, 1/4 for hardwoods) is required.

Specifications

• ASIN: B0F215D53X
• Internal SKU: IMS0654
• Size: 5/16" x 5"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Hex
• Package Quantity: 5