S-90123A393 Length 4 1/2" ASME B18.2.1 Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 316 stainless steel construction, ideal for humid or chemically aggressive woodworking environments
• Exceptional holding power achieved through thread forming technology that displaces wood fibers for a tighter, more secure grip
• High-torque installation capability with an external hex head design, allowing for secure driver engagement and efficient fastening
• Optimized for deep penetration with a 4-1/2" length and partially threaded shank, providing strong clamping force in thick wood materials
• Reliable dimensional consistency and mechanical performance, manufactured to meet the rigorous ASME B18.2.1 standard
• Safe for regulated applications with full compliance to RoHS 3 and REACH environmental directives
• Versatile right-hand threading with 7 threads per inch, ensuring broad compatibility and straightforward installation in standard wood applications

Professional Applications & Engineering Value

Engineered for demanding wood fastening, this 316 stainless steel hex head wood screw addresses common failure points in industrial settings. The thread forming design eliminates the need for pre-drilling in many applications by creating strong, permanent threads within the wood substrate, significantly reducing pull-out and loosening under vibration or load. The external hex drive provides superior torque transmission compared to standard drives, preventing cam-out during high-torque installation. With its exceptional corrosion resistance, this screw is ideally suited for outdoor structures, marine environments, and applications exposed to moisture or chemicals where ordinary fasteners would rapidly degrade. The combination of partial threading and substantial 4-1/2" length ensures maximum clamping force in timber construction, decking, and heavy-duty wood assemblies.

Specification Summary & Compliance

This 3/8"-7 x 4-1/2" wood screw features inch system measurements with a 0.375" thread diameter and 7 threads per inch. Manufacturing complies with ASME B18.2.1 specifications for dimensional accuracy and mechanical properties. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for hazardous substances. The 316 stainless steel material provides enhanced corrosion protection compared to standard stainless grades.