S-91540A300 Length 2 1/4" Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in humid or outdoor environments.
• High-torque installation enabled by the No. 1 square drive, reducing cam-out and tool slippage for efficient fastening.
• Effective weather sealing provided by the integrated stainless steel/rubber washer, preventing moisture ingress in wood, plastic, and composite applications.
• Easy self-tapping installation with Type 17 thread cutting tip and 16 threads per inch, minimizing pre-drilling effort and material splitting.
• Flush, low-profile finish due to the standard flat head design, ideal for applications where a smooth surface is required.
• Secure, long-lasting hold with a 2-1/4" length and partial threading, offering strong grip in various material thicknesses.
• Compliance with strict environmental regulations, meeting RoHS 3 and REACH standards for safe use in industrial and construction projects.

Professional Applications & Engineering Value

This No. 7 flat head wood screw is engineered to address common fastening challenges in wood, plastic, and wood-plastic composite materials. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it ideal for outdoor structures, decking, and marine applications. The thread cutting (Type 17) design and pointed tip allow for easier penetration without extensive pre-drilling, reducing installation time and the risk of material damage. Combined with the square drive (No. 1), it ensures maximum torque transfer, preventing stripping during high-stress assembly. The inclusion of a stainless steel/rubber sealing washer adds a critical layer of protection against water and dust, enhancing the durability of weather-exposed joints. These features make it a reliable choice for construction, furniture manufacturing, and composite material installations where strength, ease of use, and environmental resistance are paramount.

Specification Summary & Compliance

This screw features a thread diameter of 0.151" with approximately 16 threads per inch and a minimum thread length of 1-1/4". It is designed with a standard flat head profile and partial threading for optimal holding power. The product adheres to common inch-system dimensional standards and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring it meets environmental and safety regulations for industrial use.