S-90123A139 Length 3 1/2" ASME B18.2.1 Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for humid or chemically aggressive woodworking environments
• Enhanced torque transmission and reduced slipping thanks to the external hex head design for secure fastening in demanding applications
• Exceptional holding power in wood due to the thread forming tapping method, which creates strong, permanent threads without pre-drilling in many cases
• Optimized grip length with a minimum thread length of 2.333" for reliable engagement and pull-out resistance in thick wood materials
• Right-hand, partially threaded design ensures easy installation and allows the unthreaded shank to act as a precise dowel, minimizing wood splitting
• Full compliance with major industry standards including ASME B18.2.1 for dimensional reliability, ensuring consistent performance and interchangeability
• Safe for regulated environments as it meets RoHS 3 and REACH environmental compliance, supporting responsible manufacturing and usage

Professional Applications & Engineering Value

Engineered for wood construction and industrial applications, this 1/4"-10 x 3-1/2" 316 stainless steel hex head wood screw addresses critical challenges like material degradation and fastener failure. The thread forming design displaces wood fibers to create a tight, secure fit, significantly enhancing pull-out strength and reducing the risk of loosening under vibration or load. Its partially threaded configuration and pointed tip facilitate easier starts and precise alignment, speeding up assembly in projects from structural timber framing to outdoor decking. The external hex drive allows for high-torque installation with standard tools, making it a reliable choice for both manual and automated fastening processes in demanding woodworking environments.

Specification Summary & Compliance

This screw adheres to inch system measurements with a 1/4" thread diameter and 10 threads per inch, ensuring precise fit. It is manufactured to meet ASME B18.2.1 specifications for dimensional accuracy and mechanical properties. The product is confirmed RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, verifying the absence of restricted hazardous substances and supporting environmental safety in industrial supply chains.