S-90311A125 6-32 Shoulder Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking with permanent Nylon Patch thread locker prevents loosening in high-stress applications, maintaining assembly integrity.
• Superior corrosion resistance from 316 Stainless Steel ensures long-term durability in harsh, corrosive environments like marine or chemical processing.
• High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength supports heavy loads and repetitive motion without failure.
• Precision thread fit via Class 3A UNC coarse threads enables easy assembly and reliable engagement in automated or manual installations.
• Wide temperature tolerance of the thread locker (-50° to 250°F) allows stable performance in extreme thermal conditions.
• Secure grip and alignment from the knurled head and standard shoulder design facilitates precise component positioning and reduces slippage during tightening.
• Regulatory compliance with RoHS 3 and REACH standards ensures environmental safety and global market acceptance.

Professional Applications & Engineering Value

This 316 Stainless Steel shoulder screw is engineered to address critical challenges in industrial settings, such as vibration-induced fastener failure and corrosion in aggressive environments. The Nylon Patch thread locker provides a permanent locking mechanism that eliminates the need for secondary adhesives, reducing assembly time and enhancing reliability in machinery, automotive, and aerospace components. With a Class 3A UNC coarse thread and precise shoulder dimensions, it ensures consistent alignment and load distribution in pivots, bearings, and rotating assemblies. The socket head with hex drive allows for efficient installation in confined spaces, while the knurled texture improves handling during manual adjustments. Ideal for applications demanding high strength and temperature stability, this screw minimizes maintenance and downtime in harsh operational conditions.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit for tight tolerances and reliable engagement, with UNC coarse threads (size 6-32) and standard shoulder dimensions (diameter: 5/32", length: 3/8"). It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for environmental safety, and is manufactured to consistent hardness (Rockwell B79) and strength specifications (70,000 psi tensile, 35,000 psi shear).