IMSCREWS 5/16 x 4 Hex Head Lag Screws, 304 Stainless Steel, Partially Threaded Heavy Duty Framing Bolts for Deck & Fences, 10 pcs

"IMSCREWS 5/16 x 4 Heavy-Duty Lag Screws - 304 Stainless Steel (10 pcs)

Maximum Reach for Structural Timber
Our 4-inch lag bolts are engineered for heavy-duty framing and deep-core anchoring. The robust 5/16 diameter provides professional-grade shear resistance, making these the ideal choice for securing thick timber beams, landscape timbers, or structural components to 4x4 and 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 beam. 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 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 for hardwoods to prevent timber splitting.
¡ñ Why 4 length? Perfect for passing through 2 or 2.5 thick timber with a deep 1.5 + thread anchor in the base beam.

Specs:
- Size: 5/16 x 4
- Thread: Partially Threaded (Max Clamping)
- Material: 304 Stainless Steel
- Drive: 1/2 Hex Head
- Qty: 10 pcs"

Key Features

• ELITE CLAMPING FORCE Features a partial thread that allows the shank to bypass the outer beam, pulling timbers together for a gap-free, rock-solid joint.
• DEEP-CORE ANCHORING The 4 length is optimized for securing heavy lumber (2x4s/2x6s) into structural posts with elite holding and withdrawal power.
• 304 INDUSTRIAL SHIELD Forged from premium 304 (18-8) stainless steel to endure humid conditions and prevent rust staining in cedar, redwood, or ACQ lumber.
• HIGH-TORQUE DRIVE Robust hex head ensures a secure 1/2 socket fit, delivering maximum torque for controlled seating in dense structural timbers.
• TECHNICAL SPECIFICATION To ensure structural safety and prevent splitting, pre-drilling a pilot hole (15/64 for softwoods, 1/4 for hardwoods) is required.

Specifications

• ASIN: B0F21C2988
• Internal SKU: IMS0650
• Size: 5/16" x 4"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Hex
• Package Quantity: 10