S-91273A677 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction for reliable performance in harsh industrial environments.
• Superior strength and durability from a Rockwell B55 hardness and 70,000 psi tensile strength, ensuring long-term component integrity.
• Precise alignment and reduced wear thanks to the 3/8" shoulder diameter with tight tolerance, providing a stable bearing surface.
• Secure, high-torque installation enabled by the 3/16" hex socket drive and knurled head, preventing tool slippage.
• Easy assembly and disassembly with the 3/8"-16 UNC coarse right-hand thread and Class 2A fit for quick, reliable fastening.
• Compliance with strict environmental regulations, being RoHS 3 and REACH compliant for safe, global industrial use.
• Optimized for high-shear applications with a minimum shear strength of 35,000 psi, ideal for pivots and rotating assemblies.

Professional Applications & Engineering Value

This shoulder screw is engineered to address critical alignment and wear challenges in industrial fastening systems. The 18-8 stainless steel material offers excellent resistance to rust and corrosion, making it suitable for machinery, automotive, and outdoor equipment. The knurled head and hex socket drive ensure a firm grip during installation, reducing the risk of stripping and enhancing operator safety. The 3/8" shoulder diameter acts as a precise pivot or spacer, minimizing misalignment and extending the life of moving parts. With its UNC coarse thread and Class 2A fit, it provides quick assembly and reliable holding power in high-vibration environments, streamlining maintenance and reducing downtime.

Specification Summary & Compliance

This shoulder screw features a 3/8"-16 UNC coarse thread with a Class 2A fit for standard tolerance and easy assembly. The shoulder diameter is 3/8" with a tolerance of -0.004" to -0.002", and the shoulder length is 1/4" with a tolerance of -0.005" to 0.005", ensuring precise engineering fits. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial applications.