Designed for maximum penetration, superior strength, and long‑lasting durability, the Midwest Fastener SaberDrive™ 52537 lag screw is a premium structural fastener built for demanding construction environments. At 6 inches in length and featuring a 5/16" diameter, this heavy‑duty screw is engineered for deep anchoring and high‑load wood‑to‑wood connections—ideal for large framing, outdoor structures, and critical structural assemblies.

Each screw is manufactured from high‑quality alloy steel and case‑hardened for exceptional durability. The advanced XL1500 exterior coating provides robust resistance against corrosion, moisture, wood acids, and exposure to treated lumber, ensuring that these lag screws maintain structural integrity over time. A T‑30 Star Drive head delivers superior torque transfer with minimal cam‑out, while the Type‑17 cutting point enables faster, cleaner starts without pre‑drilling in most wood types.

Whether you're a contractor building load‑supporting structures or a homeowner taking on large‑scale exterior projects, the SaberDrive 52537 ensures fast, reliable, and durable fastening performance.

Key Features

• 5/16" x 6" long‑shank structural lag screw, designed for deep anchoring in heavy‑duty applications.
• T‑30 Star Drive system reduces cam‑out and ensures stable torque transfer for smooth installation.
• Large washer-style head increases bearing surface and maximizes pull‑through resistance for secure fastening.
• Type‑17 cutting tip eliminates pre‑drilling in most applications and reduces splitting during installation.
• Premium XL1500 exterior coating protects against harsh environments, wood treatments, and corrosion.
• Unique serrated thread design increases holding power and ensures stable fastening in structural builds.
• High‑strength alloy steel, case‑hardened for maximum durability under load.
• Sold in a 20‑count bucket, ideal for medium to large construction and outdoor projects.

Specifications

• Model: 52537
• Brand: Midwest Fastener / SaberDrive
• Diameter: 5/16"
• Length: 6"
• Material: Alloy steel, case‑hardened
• Coating / Finish: Tan XL1500 corrosion‑resistant coating; Platinum variants available depending on distributor.
• Drive Type: Star Drive (T‑30)
• Head Style: Round washer head for increased load distribution 
• Point Style: Type‑17 self‑drilling tip 
• Thread Design: Serrated thread for superior fastening hold 
• Package Quantity: 20 per bucket 
• Application Type: Structural / construction lag screw for heavy‑duty fastening 

Applications

The SaberDrive 52537 is built for high-demand scenarios requiring deep anchoring and long-term durability, such as:

• Timber framing, load‑bearing posts, and beam connections in structural carpentry. 
• Deck construction, pergolas, and large outdoor structures, where long‑shank penetration and corrosion resistance are essential. 
• Exterior treated lumber installations, supported by XL1500 coating for enhanced weather and chemical resistance. 
• Heavy‑duty wood‑to‑wood fastening, requiring high clamping force and strong pull‑through resistance.
• Professional carpentry and DIY projects needing a reliable, long‑length lag screw for deep structural connections.