S-90939A138 1/4"-20 x 3/8" Stainless Steel Button Head Torx Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with A286 stainless steel construction, ideal for harsh industrial environments
• Superior torque transmission through T30 Torx drive, reducing cam-out and tool wear
• High tensile strength of 130,000 psi ensures reliable performance under extreme mechanical stress
• Precise Class 2A thread fit provides smooth installation and consistent clamping force
• Fully threaded UNC coarse design enables faster assembly and stronger holding power
• Rounded button head profile offers a low-profile, aesthetically clean finish while minimizing snagging
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and global market acceptance

Professional Applications & Engineering Value

This A286 stainless steel Torx button head screw delivers critical performance in demanding applications where corrosion resistance and high tensile strength are paramount. The T30 Torx drive ensures maximum torque transfer without stripping, making it ideal for precision assembly in aerospace, automotive, and heavy machinery. Its fully threaded 1/4"-20 UNC coarse thread with Class 2A fit provides rapid installation and vibration resistance, while the rounded head design reduces stress concentration points. Engineered to withstand extreme temperatures and corrosive environments, these screws maintain integrity in critical industrial fastening applications where failure is not an option.

Specification Summary & Compliance

This fastener features a 1/4"-20 UNC coarse thread with Class 2A tolerance for precise fit, fully threaded construction, and right-hand thread direction. Manufactured from A286 stainless steel with Rockwell C24 hardness and 130,000 psi tensile strength. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial markets.