S-90123A634 Length 4" ASME B18.2.1 Wood Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 316 stainless steel construction, ideal for humid or chemically aggressive wood environments
• Superior holding power with thread forming design that creates stronger, more permanent connections in wood materials
• High-torque installation capability through external hex head design, allowing for secure fastening with standard tools
• Optimized thread engagement with 4.5 TPI configuration providing maximum pull-out resistance in wood applications
• Partial threading design ensures precise clamping force distribution while preventing wood splitting
• Regulatory compliance assurance meeting ASME B18.2.1 standards and environmental regulations including RoHS 3 and REACH
• Dimensional precision with Class 2A thread tolerances ensuring consistent performance and interchangeability

Professional Applications & Engineering Value

These 316 stainless steel hex head wood screws deliver exceptional engineering value in demanding wood fastening applications where corrosion resistance and structural integrity are paramount. The thread forming technology eliminates the need for pre-drilling in many wood types, creating permanent, high-strength connections that resist vibration loosening. The external hex drive provides superior torque transmission for secure installation in heavy-duty wood construction, decking, and outdoor structures. With their marine-grade 316 stainless steel composition, these screws maintain structural performance in coastal environments, industrial settings, and applications exposed to moisture, chemicals, or temperature variations. The partially threaded design concentrates clamping force precisely where needed while minimizing wood stress concentration points.

Specification Summary & Compliance

These wood screws feature Class 2A thread tolerances with 3/4" diameter and 4.5 threads per inch configuration, manufactured to ASME B18.2.1 specifications for dimensional accuracy and performance reliability. The products are fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and meet REACH (EC 1907/2006) requirements for chemical safety. The right-hand thread direction and 2.667" minimum thread length ensure proper engagement depth across various wood thicknesses while maintaining structural integrity.