S-91273A529 5-40 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction and Black Oxide finish, ideal for harsh industrial environments
• Precise component alignment ensured by the 1/8" shoulder diameter with tight tolerance control for reliable assembly fit
• High mechanical strength delivering 70,000 psi tensile and 35,000 psi shear strength for demanding applications
• Secure installation and removal with hex socket drive and knurled head for improved grip and torque application
• Consistent thread engagement through Class 2A UNC coarse threads providing reliable fastening in various materials
• Durable performance backed by Rockwell B55 hardness for long-term reliability in mechanical assemblies
• Regulatory compliance meeting RoHS 3 and REACH standards for global manufacturing requirements

Professional Applications & Engineering Value

These 5-40 UNC shoulder screws with 1/8" precision shoulder are engineered to solve critical alignment challenges in industrial machinery and precision equipment. The 18-8 Stainless Steel construction combined with Black Oxide finish provides superior corrosion resistance in demanding environments while maintaining dimensional stability. The Class 2A thread fit ensures consistent engagement in assemblies where precise component positioning is essential, such as in rotating mechanisms, bearing mounts, and precision instruments. The knurled head and hex socket drive facilitate secure installation in confined spaces, while the coarse UNC threads offer excellent holding power in various substrate materials. These shoulder screws deliver reliable performance in applications requiring exact axial positioning and rotational control.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse thread specifications. The shoulder diameter maintains tight tolerances of -0.004" to -0.002" for precision alignment applications. These components are manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance. The mechanical properties including 70,000 psi tensile strength and 35,000 psi shear strength meet industrial requirements for reliable fastening performance.