S-91205A151 6-32 x 3/4" ASME B18.3, ASTM A574 Alloy Steel Thread-Locking Socket Head Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking: Integrated nylon patch thread locker prevents loosening under dynamic loads, ensuring reliable fastening in demanding applications.
• Exceptional strength and durability: Made from alloy steel with a 170,000 psi tensile strength and Rockwell C37 hardness for high-stress applications.
• Superior corrosion protection: The black-oxide finish provides a durable layer of protection against rust and corrosion, extending the screw's service life.
• Precise and reliable engagement: Class 3A thread fit offers tighter tolerances for a secure, high-quality fit that reduces the risk of cross-threading and stripping.
• Wide operational temperature range: The nylon patch locker performs reliably in temperatures from -70° to 250° F, making it suitable for various industrial environments.
• Optimized for high-torque applications: The hex socket drive allows for high torque application with a secure grip, minimizing tool slippage and head damage.
• Broad industrial compatibility: UNC coarse threads provide quick assembly and are widely used across numerous industries and equipment.

Professional Applications & Engineering Value

This socket head cap screw is engineered to solve critical fastening challenges in high-vibration and precision assembly environments. The combination of black-oxide alloy steel and a nylon patch thread locker directly addresses the common industrial pain points of fastener loosening and corrosion. The Class 3A thread fit on the 6-32 UNC thread ensures precise engagement, which is vital for maintaining structural integrity in machinery, automotive sub-assemblies, and electronic enclosures. Its high tensile strength and temperature-resistant locking mechanism make it an ideal choice for applications where reliability under stress and thermal cycling is non-negotiable, providing long-term value by reducing maintenance needs and preventing costly downtime.

Specification Summary & Compliance

This screw features a 6-32 UNC coarse thread with a precision Class 3A thread fit and is fully threaded. It is manufactured to meet the dimensional requirements of ASME B18.3 and the material specifications of ASTM A574. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent global standards for environmental safety and material restrictions.