S-91205A632 3/8"-16 x 2" ASME B18.3, ASTM A574 Alloy Steel Thread-Locking Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress industrial applications, reducing the risk of fastener failure.
• Secure vibration-resistant locking with the integrated Nylon Patch thread locker maintains clamp load integrity in temperatures from -70° to 250°F, preventing loosening in dynamic environments.
• Precise Class 3A thread fit provides superior engagement and consistent clamping force, minimizing assembly issues and rework.
• Durable Black-Oxide finish on alloy steel offers enhanced corrosion resistance and a professional appearance, extending service life in demanding conditions.
• Hex socket drive design allows for high-torque installation in confined spaces, improving assembly efficiency and tool accessibility.
• Coarse UNC threads enable quicker installation and better debris resistance compared to fine threads, speeding up production timelines.
• Partial threading provides an unthreaded shoulder for precise alignment and shear resistance, ideal for pivoting or locating applications.

Professional Applications & Engineering Value

This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address critical challenges in heavy machinery, automotive, and aerospace assemblies where vibration and thermal cycling are prevalent. The Nylon Patch thread locker effectively counters self-loosening, eliminating the need for secondary locking devices and reducing maintenance intervals. With a Rockwell C37 hardness and robust alloy steel construction, it withstands extreme mechanical loads without compromising thread integrity. The coarse 3/8"-16 UNC thread facilitates rapid installation in high-volume production, while the hex drive ensures reliable torque transmission in space-constrained environments, making it a versatile solution for OEMs and MRO professionals seeking durability and compliance.

Specification Summary & Compliance

This screw features a Class 3A thread fit for precise dimensional accuracy per UNC standards, with a minimum thread length of 1-1/2" on a 2" overall length. Manufactured in accordance with ASME B18.3 and ASTM A574 specifications, it guarantees consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions adherence.