S-90311A122 6-32 Shoulder Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking: Permanent nylon patch thread locker prevents loosening under dynamic loads, maintaining assembly integrity in high-stress environments.
• Superior corrosion resistance: Made from 316 stainless steel, offering excellent performance in harsh, corrosive conditions like marine or chemical processing.
• High strength and durability: With a tensile strength of 70,000 psi and shear strength of 35,000 psi, it handles heavy-duty mechanical stresses reliably.
• Precision thread fit: Class 3A thread fit ensures tight tolerances and secure fastening, reducing the risk of cross-threading and improving assembly efficiency.
• Wide temperature tolerance: Thread locker functions effectively from -50° to 250°F, suitable for applications with thermal cycling.
• Easy installation and grip: Hex socket drive and knurled head allow for secure tool engagement and manual handling, speeding up maintenance and assembly.
• Regulatory compliance: Meets RoHS 3 and REACH standards, ensuring safety and environmental responsibility in global supply chains.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw with 6-32 UNC coarse threading and a nylon patch thread locker is engineered to address common industrial challenges such as vibration-induced loosening and corrosion in demanding environments. The Class 3A thread fit provides precise alignment and reduces assembly errors, while the coarse thread design ensures quick installation and high resistance to stripping. Ideal for machinery, automotive, and electronic assemblies, the screw's shoulder diameter and length offer stable positioning for rotating parts or spacers. The hex drive and knurled head enhance usability in tight spaces, making it a reliable choice for maintenance-heavy applications where durability and compliance with RoHS and REACH are critical for long-term performance.

Specification Summary & Compliance

This shoulder screw adheres to UNC coarse thread standards with a Class 3A thread fit for high precision. Dimensions include a thread diameter of 0.138", shoulder diameter of 5/32" with tight tolerances, and a thread length of 3/16". It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for industrial use globally.