"IMSCREWS 5/16 x 5 Heavy-Duty Lag Screws - 304 Stainless Steel (20 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 this 20-piece contractor pack 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 20 pcs? Best value for large-scale structural installations like retaining walls or expansive outdoor timber framing.

Specs:
- Size: 5/16 x 5
- Thread: Partially Threaded (Max Clamping)
- Material: 304 Stainless Steel
- Drive: 1/2 Hex Head
- Qty: 20 pcs"

Key Features

• ULTIMATE CLAMPING POWER Engineered with a partial thread that allows the shank to bypass the outer beam, pulling timbers together for a gap-free, rock-solid joint.
• STRUCTURAL CORE ANCHORING The 5 reach is optimized for securing multi-layer timber into structural posts with elite holding and withdrawal power.
• 304 EXTERIOR DEFENSE Forged from premium 304 (18-8) stainless steel to endure wet conditions and prevent rust staining in cedar, redwood, or ACQ lumber.
• HIGH-TORQUE DRIVE Robust hex head ensures a secure 1/2 socket fit, providing maximum torque transfer for controlled installation in dense hardwoods.
• TECHNICAL SPECIFICATION To ensure structural safety and prevent splitting, pre-drilling a pilot hole (3/16 for softwoods, 1/4 for hardwoods) is mandatory.

Specifications

• ASIN: B0F21BSKVL
• Internal SKU: IMS0656
• Size: 5/16" x 5"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Hex
• Package Quantity: 20