S-91273A527 5-40 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments.
• High tensile and shear strength (70,000 psi tensile, 35,000 psi shear) ensures reliable performance under heavy loads.
• Precise alignment and reduced wear due to the standard shoulder fit and knurled head for secure positioning.
• Easy installation and removal with a 5/64" hex socket drive, minimizing tool slippage and damage.
• Durable black oxide finish enhances wear resistance and provides a sleek, professional appearance.
• Wide compatibility with UNC coarse threads and Class 2A fit for consistent mating with standard components.
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and global market acceptance.

Professional Applications & Engineering Value

This 5-40 UNC shoulder screw is engineered to address critical alignment and durability challenges in precision machinery and assemblies. The 18-8 Stainless Steel material offers excellent resistance to rust and corrosion, while the Black Oxide finish adds an extra layer of protection against abrasion. The knurled head and standard shoulder design prevent rotation during operation, ensuring stable performance in high-vibration applications like robotics, automotive systems, and industrial equipment. With a Rockwell B55 hardness and robust thread construction, it minimizes the risk of stripping and extends service life, reducing maintenance costs and downtime in demanding environments.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for precise tolerances. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. Manufacturing specifications include a shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005", guaranteeing consistent quality and reliability in assembly processes.