S-91087A134 1/4"-20 x 3" Wood Screws
Wood Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior torque transmission with Torx T30 drive, reducing cam-out and tool wear for reliable fastening
- Enhanced corrosion resistance from black-phosphate steel coating, ideal for demanding environments
- Secure fastening in wood and sheet metal with UNC coarse thread spacing and thread-forming design
- Flush, professional finish achieved with 82° countersink angle and standard flat head profile
- Optimized grip and reduced splitting through partially threaded shank design
- Compliance with global environmental standards including RoHS 3 and REACH regulations
- Versatile 3-inch length provides ample engagement for thick materials and structural applications
Professional Applications & Engineering Value
These heavy-duty wood screws with black-phosphate steel construction address critical industrial fastening challenges where corrosion resistance and structural integrity are paramount. The Torx T30 drive system delivers exceptional torque transfer efficiency, preventing stripping during high-torque applications in sheet metal and wood assemblies. The UNC coarse thread with thread-forming tapping method creates strong, permanent threads in base materials without pre-tapping, while the partially threaded design concentrates holding power where needed most. The 82° countersink angle ensures flush mounting in professional installations, making these screws ideal for furniture manufacturing, structural wood framing, and metal-to-wood applications requiring reliable, long-term performance.
Specification Summary & Compliance
This 1/4-20 x 3" wood screw features UNC coarse thread spacing with standard Class 2A thread tolerances for consistent performance. The manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across global markets. Specifications include a 0.25" thread diameter, 1½" minimum thread length, T30 drive size, and standard flat head profile with 0.479" head diameter for professional-grade fastening applications.
