S-91327A119 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking with permanent nylon patch that maintains secure fastening from -50° to 250°F, preventing loosening in dynamic applications
• Superior corrosion resistance from 18-8 stainless steel construction with passivated finish, ensuring long-term reliability in harsh environments
• Precision alignment capability with 1/4" shoulder diameter featuring tight tolerances (-0.004" to -0.002") for accurate component positioning
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding industrial applications
• Secure installation and removal with hex socket drive and knurled head design providing excellent grip and torque transmission
• Reliable thread engagement through Class 3A thread fit and UNC coarse threading for consistent, secure fastening
• Industry compliance assurance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw delivers exceptional engineering value in precision assembly applications where component alignment and vibration resistance are critical. The 1/4" shoulder diameter with tight manufacturing tolerances ensures precise bearing surfaces for rotating components, while the nylon patch locking technology provides permanent vibration resistance without compromising disassembly capability. Manufactured from 18-8 stainless steel with passivated finish, this fastener maintains integrity in corrosive environments common in industrial machinery, automotive assemblies, and electronic enclosures. The combination of 70,000 psi tensile strength and Class 3A thread fit guarantees reliable performance in high-stress applications, making it ideal for precision instruments, manufacturing equipment, and automation systems where fastener failure is not an option.

Specification Summary & Compliance

This precision shoulder screw features Class 3A thread fit with UNC coarse threading (10-24) and maintains dimensional accuracy per ASME B18.3 specifications. The shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005" ensure consistent manufacturing quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry standards for hazardous substance restrictions.