S-91266A146 6-32 x 3/8" ASTM F835 Alloy Steel Thread-Locking Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with the integrated Nylon Patch thread locker, ensuring your assemblies remain secure even under dynamic loads.
• Exceptional tensile strength of 130,000 psi provides reliable performance in high-stress applications, reducing the risk of fastener failure.
• Wide operational temperature range from -65° to 250°F allows for dependable use in diverse environmental conditions.
• Precise Class 3A thread fit ensures easy assembly and a tight, secure connection, minimizing the chance of cross-threading.
• Corrosion-resistant Black-Oxide finish on Alloy Steel enhances durability and provides a professional appearance for long-term use.
• 82° countersink angle and flat head design enables a flush finish, ideal for applications where a smooth surface is critical.
• Hex drive (5/64") offers high torque capability and reduces the risk of tool slippage during installation.

Professional Applications & Engineering Value

This 6-32 x 3/8" flat head screw is engineered to solve critical challenges in industrial assembly, where vibration loosening and material strength are paramount. The Black-Oxide Alloy Steel construction, combined with a Rockwell C39 hardness, ensures excellent wear resistance and longevity in demanding environments. The Nylon Patch locking feature effectively prevents back-off in machinery, electronics, and automotive components subjected to constant motion. Its UNC coarse threads and fully threaded design facilitate quick installation and strong holding power in metals and plastics. By integrating a reliable thread locker that performs across a broad temperature spectrum, this screw minimizes maintenance needs and enhances the operational integrity of your products, making it a trusted choice for engineers seeking durability and compliance.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including UNC thread with a Class 3A fit for superior thread engagement and a standard 82° countersink angle. It is manufactured in compliance with ASTM F835 specifications, ensuring consistent quality and performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its safety for use in various global markets without hazardous substances.