"IMSCREWS 1/4 x 2-1/2 Heavy-Duty Lag Screws - 304 Stainless Steel (20 pcs)

Optimized Reach for Timber Joining
An essential fastener for multi-layered wood projects. The 2.5-inch length is perfectly sized to pass through standard 1.5 dimensional lumber (like a 2x4) and provide a deep 1-inch thread anchor into the support post. Ideal for deck railings, heavy shelving, and outdoor play equipment.

Vise-Like Clamping Power
Our partially threaded shank features a smooth upper section. This allows the bolt to pull the outer board tightly against the support beam without the threads biting prematurely in the top board. This creates a gap-free, rock-solid joint, preventing the bridging effect that often leaves connections loose when using full-thread screws at this length.

304 Stainless Exterior Defense
Forged from premium 18-8 (304) Stainless Steel for ultimate weather resistance. compatible with ACQ pressure-treated lumber. It resists rust in humid environments and prevents unsightly rust streaks on high-value cedar, redwood, or deck framing.

Technical FAQ
¡ñ Tools Required: Fits a standard 7/16 hex socket or wrench.
¡ñ Pre-drilling: Recommended to prevent timber splitting. Use a 1/8 bit for softwoods or 3/16 bit for hardwoods.
¡ñ Why 2-1/2 length? It provides the perfect balance of deep penetration and structural clamping for 2x lumber applications.
¡ñ Resilience: Rated for marine, coastal, and high-humidity environments.

Specifications:
- Size: 1/4 x 2-1/2
- Thread: Partially Threaded (Max Clamping)
- Material: 304 Stainless Steel (18-8)
- Drive: 7/16 Hex Head
- Qty: 20 pcs"

Key Features

• PRO-GRADE CLAMPING FORCE Featuring a partially threaded design that allows the smooth shank to pass through the outer board, pulling timber members together for a rock-solid, gap-free joint.
• OPTIMIZED FOR 2x4 FRAMING At 2.5 inches, these screws provide the perfect anchoring depth for connecting 2x4s to posts, ensuring a deep structural hold without the risk of over-penetration.
• 304 EXTERIOR STABILITY Forged from premium 304 (18-8) stainless steel to prevent rust and oxidation in high-moisture garden environments. Fully compatible with ACQ pressure-treated lumber.
• STABLE TORQUE TRANSFER Precision hex head ensures a secure 7/16 socket fit, offering more stable torque transfer than Phillips head screws and reducing slipping during heavy seating.
• TECHNICAL SPECIFICATION To ensure joint integrity and prevent timber splitting, pre-drilling a pilot hole (3/16 for softwoods, 7/32 for hardwoods) is mandatory for these 1/4 bolts.

Specifications

• ASIN: B0F2192VZ1
• Internal SKU: IMS0617
• Size: 1/4" x 2-1/2"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Hex
• Package Quantity: 20