S-91530A778 Length 2 1/4" Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in humid or outdoor wood applications
• Enhanced driving torque and reduced cam-out thanks to the square drive design, ensuring secure installation and minimizing tool slippage
• Self-tapping capability through thread cutting technology eliminates the need for pre-tapped holes, saving time and labor in wood and plastic-wood composites
• Optimized holding power with partial threading design that provides maximum grip while reducing material splitting in delicate wood structures
• Clean, flush installation with narrow flat head profile that sits neatly beneath surface level for professional finishing
• Precision compatibility with standard 1/16" drill bits for straightforward pilot hole preparation and consistent installation results
• Reliable performance in demanding environments with right-hand threading and pointed tip for easy penetration and secure fastening

Professional Applications & Engineering Value

These 18-8 stainless steel wood screws deliver exceptional engineering value in wood and plastic-wood composite applications where corrosion resistance and structural integrity are paramount. The thread cutting technology (Tapping Screw Type 17) creates precise mating threads in base materials, eliminating stripping and providing superior pull-out resistance compared to standard wood screws. The square drive system offers significantly higher torque transmission than Phillips or slotted drives, preventing cam-out during high-torque installation in dense hardwoods or composite materials. With partial threading and optimized 10 threads per inch count, these screws concentrate holding power where needed most while minimizing stress concentration that can lead to wood splitting. The narrow flat head profile ensures flush mounting in cabinetry, furniture, and exterior wood structures where protruding fasteners are unacceptable.

Specification Summary & Compliance

These No. 7 size screws feature a 0.151" thread diameter with 10 threads per inch and 2-1/4" length with minimum 1-1/8" thread engagement. The square drive accepts No. 1 drive bits and requires 1/16" pilot holes for optimal performance. Manufactured to precise dimensional standards with right-hand threading and partially threaded shank design. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring they meet the latest environmental and safety standards for industrial applications.