S-91087A122 1/4"-20 x 1 1/4" Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black phosphate steel coating, ideal for demanding industrial environments
• Maximum torque transfer and reduced cam-out thanks to the T30 Torx drive system
• Efficient thread-forming design creates strong, permanent threads in sheet metal and wood without pre-tapping
• Full threading along the 1-1/4" length ensures consistent, high-clamping force across the entire joint
• Standard 82° flat head profile provides a clean, flush finish when countersunk
• Coarse 1/4"-20 UNC thread delivers rapid installation and excellent holding power in various materials
• Compliance with major environmental regulations including RoHS 3 and REACH for safe, global industrial use

Professional Applications & Engineering Value

These 1/4-20 UNC Torx flat head screws are engineered to solve critical fastening challenges in sheet metal and wood applications. The thread-forming tapping method eliminates the need for separate tapping operations, reducing assembly time and labor costs while creating stronger, more reliable threads that resist loosening under vibration. The black phosphate steel construction provides a durable barrier against corrosion, extending service life in humid or outdoor conditions. The T30 Torx drive interface allows for higher torque application compared to traditional drives, minimizing tool slippage and head stripping for more efficient installations and maintenance. This combination makes them an optimal choice for industrial machinery, construction, and manufacturing where high-strength, corrosion-resistant fasteners are essential.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with standard Class 2A tolerances for reliable fit. It is fully threaded with a blunt tip and round shank cross-section. The manufacturing and material composition adhere to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring they are free of restricted hazardous substances and suitable for industrial use worldwide.