S-91870A769 1/4"-20 x 3/4" ASME B18.3 Tamper-Resistant Torx Steel Flat Head Screws
Tamper-Resistant Torx Steel Flat Head 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
- Enhanced tamper resistance with specialized Torx T30 drive, preventing unauthorized removal in high-security environments.
- Superior corrosion protection from the black oxide finish, extending service life in demanding industrial conditions.
- Exceptional load-bearing capacity due to alloy steel construction and 160,000 psi tensile strength for reliable performance under stress.
- Precise, secure fastening ensured by Class 3A thread fit and UNC coarse threading, reducing the risk of loosening in machinery.
- Optimized flush mounting with an 82° countersink angle and standard flat head profile for seamless integration into assemblies.
- Consistent high durability backed by Rockwell C38 hardness, maintaining structural integrity through repeated use.
- Broad compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for safe, regulated industrial use.
Professional Applications & Engineering Value
This flat head screw is engineered to address critical challenges in industrial settings, such as vibration-induced loosening and unauthorized access. The alloy steel material, combined with a black oxide finish, provides robust resistance to wear and environmental factors, making it ideal for machinery, electronic enclosures, and public infrastructure where durability is paramount. The tamper-resistant Torx T30 drive enhances security, preventing tampering in sensitive applications. With a UNC coarse thread and Class 3A fit, it ensures quick installation and reliable hold in coarse-threaded components, reducing maintenance downtime and improving overall assembly integrity in industrial fasteners systems.
Specification Summary & Compliance
This product adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and UNC coarse threading with a 1/4"-20 size. It is manufactured in compliance with ASME B18.3 specifications and meets regulatory requirements such as RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety and industry conformity for reliable performance in professional applications.
