S-91327A293 6-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking with nylon patch thread locker maintains secure fastening in temperatures from -50° to 250°F, preventing loosening in dynamic applications
• Superior corrosion resistance from 18-8 stainless steel construction with passivated finish ensures long-term reliability in harsh industrial environments
• Precision alignment capability with 1" shoulder length providing accurate component positioning and rotational bearing surfaces
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for demanding mechanical applications
• Reliable thread engagement through Class 3A thread fit ensures consistent, precise mating with minimal tolerance variation
• Easy installation and removal with hex socket drive design allowing high torque application in confined spaces
• Industry-standard compliance meeting ASME B18.3 specifications for guaranteed interchangeability and quality

Professional Applications & Engineering Value

This 6-32 UNC shoulder screw delivers exceptional engineering value in precision assembly applications where component alignment and vibration resistance are critical. The 18-8 stainless steel construction with passivated finish provides superior corrosion protection for machinery operating in demanding environments, while the integrated nylon patch locking mechanism eliminates the need for separate locking washers or adhesives. The precisely machined shoulder serves as a reliable locating surface in rotating assemblies, bearing applications, and precision mechanisms, ensuring proper component alignment and reducing wear. With its hex socket head design, engineers can achieve high clamping forces in space-constrained applications, making it ideal for aerospace components, medical devices, automation equipment, and electronic enclosures where reliability and precision are paramount.

Specification Summary & Compliance

This shoulder screw features precision Class 3A thread fit with UNC coarse threading for optimal engagement and 1" shoulder length with tight tolerances for accurate positioning. Manufactured to ASME B18.3 standards ensuring dimensional consistency and reliability. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental regulations for hazardous substances. The combination of 70,000 psi tensile strength and controlled dimensional tolerances provides engineers with a reliable, high-performance fastening solution for critical applications.