S-90000A408 Length 4" Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for humid, marine, and chemical-exposed environments
• Efficient installation and high torque resistance thanks to the No. 2 square drive flat head design, reducing cam-out and tool slippage
• Strong, secure fastening in wood and composites with a thread cutting (Type 17) tip and 13 TPI for quick, clean thread formation
• Reduced material splitting due to the partially threaded shank, which minimizes stress on wood and plastic-wood composites
• Reliable performance in demanding applications with a 4" length and 2 3/4" minimum thread engagement for deep, sturdy holds
• Compliance with strict industrial safety and environmental standards, including RoHS 3 and REACH, ensuring safe and sustainable use

Professional Applications & Engineering Value

These 316 stainless steel wood screws are engineered to address common failure points in outdoor, marine, and industrial settings where moisture and corrosive agents are prevalent. The thread cutting design (Type 17) and pointed tip allow for self-tapping installation in wood and plastic-wood composites, eliminating the need for pre-drilling in many cases and speeding up assembly. The square drive flat head offers superior torque transfer compared to Phillips, reducing strip-outs and improving work efficiency. With a 4" length and partial threading, these screws provide robust clamping force while minimizing the risk of material splitting, making them a reliable choice for decking, fencing, and structural wood applications where durability and corrosion resistance are critical.

Specification Summary & Compliance

This No. 10 screw features a 0.19" thread diameter with approximately 13 threads per inch and a minimum thread length of 2 3/4". The flat head has a standard profile with a 0.344" diameter and 0.189" height, compatible with a No. 2 square drive. Manufactured to precise inch-system dimensions, it is designed for use with a 3/32" (0.094") drill bit when pre-drilling is required. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial fasteners.