S-91412A110 1/4"-20 x 3/4" Stainless Steel Thread-Locking Hex Head Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking with permanent nylon patch that maintains secure fastening in high-stress environments
• Superior corrosion resistance from 18-8 stainless steel construction for extended service life in harsh conditions
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and mechanical stress
• Wide temperature tolerance (-55° to 250°F) maintains locking integrity across extreme operating environments
• Precision Class 2A thread fit provides consistent installation and reliable engagement with mating components
• External hex drive design enables quick installation and high torque application with standard tools
• Environmental compliance with RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 1/4-20 UNC hex head screws with nylon patch locking technology solve critical vibration-induced loosening problems in machinery, equipment assemblies, and structural frameworks. The 18-8 stainless steel construction provides exceptional corrosion resistance, making them ideal for outdoor equipment, marine environments, and chemical processing facilities where moisture and corrosive elements are present. The coarse UNC threading ensures rapid installation and reliable performance in materials where fine threads might strip or fail. With their fully threaded design and external hex drive, these locking screws deliver consistent clamping force and secure fastening in automotive, manufacturing, and construction applications where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

These hex head screws feature precision Class 2A thread fit with 1/4"-20 UNC coarse threading and right-hand thread direction. Manufactured to exacting standards with fully threaded design and 3/4" length. The components are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors while meeting international fastener specifications for quality and performance.