The Midwest Fastener SaberDrive™ 52540 lag screw is engineered for maximum holding strength, long‑reach penetration, and exceptional corrosion resistance—making it the ideal fastener for the most demanding structural and outdoor applications. With a substantial 3/8-inch diameter and an extended 8-inch length, this fastener is designed to secure thick lumber, large framing components, and heavy‑duty exterior assemblies requiring deep anchoring and high structural integrity.

Equipped with a Star Drive system that minimizes cam‑out and maximizes torque transfer, along with the premium XL1500 Tan coating for superior corrosion resistance, the 52540 delivers professional‑grade performance you can trust for years. Its Type‑17 cutting tip and rugged serrated threads are optimized for efficient driving while helping prevent wood splitting—even in dense or pressure‑treated materials.

Whether you're constructing decks, timber frames, outdoor structures, or heavy‑load assemblies, this SaberDrive™ lag screw offers unmatched durability and fastening power.

Key Features

• 3/8" diameter x 8" length, designed for high‑load structural fastening and deep penetration.
• Star Drive (T‑40) delivers excellent torque control with reduced slippage and cam‑out.
• Modified truss or washer‑style head increases bearing surface and enhances pull‑through resistance.
• XL1500 Tan corrosion-resistant coating protects against environmental exposure, moisture, and treated lumber chemicals.
• Type‑17 point provides fast starts, clean penetration, and reduced need for pre‑drilling.
• Serrated thread design ensures strong bite and stable fastening under load.
• Constructed from high‑strength steel, case‑hardened for maximum durability.
• Common packaging: 25‑count bucket, ideal for professional and large‑scale construction use.

Specifications

• Model: 52540
• Brand: Midwest Fastener / SaberDrive
• Diameter: 3/8"
• Length: 8"
• Material: Hardened steel / alloy steel 
• Finish / Coating: Tan XL1500 advanced corrosion-resistant finish 
• Head Style: Modified truss or washer-style head (T‑40 Star Bit) 
• Drive Type: Star Drive, typically T‑40 
• Thread Type: Partial, with serrated thread profile 
• Point Style: Type‑17 self-cutting tip
• Package Quantity: Commonly 25 screws per bucket/package 
• Application Rating: Structural / heavy-duty lag screw for demanding construction applications 

Applications

Engineered for heavy-duty structural work, the SaberDrive 52540 excels in:

• Timber framing, beams, and deep wood-to-wood structural connections, requiring extra screw length for secure anchoring. 
• Deck construction, including ledger boards, support posts, and heavy framing elements.
• Outdoor structures, such as pergolas, pole barns, gazebos, and large fencing systems. 
• Treated lumber installations, benefitting from XL1500 coating protection against chemical corrosion.
• General heavy-duty carpentry and contracting, where high torque capability and deep bite are essential