S-95452A120 Length 3 1/2" ASME B18.2.1 Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black oxide coating for extended service life in demanding wood applications
• Enhanced torque transmission through external hex drive design prevents cam-out and ensures secure fastening
• Optimized thread engagement with 9 threads per inch provides maximum holding power in wood materials
• Reduced splitting risk through thread-forming design that displaces material rather than removing it
• Simplified installation with pointed tip and partial threading for easier starting and controlled penetration
• Industry-standard compatibility with 1/2" head width matching standard wrench sizes for efficient installation
• Reliable performance backed by ASME B18.2.1 specifications ensuring consistent quality and dimensional accuracy

Professional Applications & Engineering Value

Engineered for wood construction applications, these black oxide steel screws deliver exceptional performance where corrosion resistance and structural integrity are paramount. The thread-forming design creates stronger, more permanent connections by compressing wood fibers rather than cutting them, significantly reducing the risk of material splitting in hardwoods and engineered lumber. The external hex drive system provides superior torque transmission compared to traditional screw heads, allowing for tighter fastening in heavy-duty framing, decking, and furniture assembly. With partial threading and precise 9 threads per inch configuration, these screws maintain optimal clamping force while minimizing stress concentration points. The combination of 2-1/4" minimum thread length and pointed tip ensures quick starting and deep penetration, making them ideal for both professional contractors and industrial wood fabricators requiring reliable, long-lasting fastening solutions.

Specification Summary & Compliance

This 5/16" x 3-1/2" wood screw features inch system measurements with Class 2A thread tolerances as specified in ASME B18.2.1 standards. The partially threaded design with right-hand direction and 2-1/4" minimum thread length ensures proper engagement in wood substrates. Manufacturing compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming the absence of restricted hazardous substances. The black oxide surface treatment on steel substrate provides consistent corrosion protection while maintaining dimensional accuracy across all critical parameters including 1/2" head width and 0.219" head height for reliable tool engagement.