S-94731A730 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi shear strength for reliable performance under high-stress conditions.
• Precise component alignment enabled by the 1-3/4" shoulder with standard fit, ensuring accurate positioning in assemblies.
• Easy installation and removal with the external hex drive and coarse UNC threads, reducing assembly time and effort.
• Consistent thread engagement guaranteed by Class 2A thread fit, providing secure fastening and vibration resistance.
• Robust durability from Rockwell B55 hardness, maintaining integrity through repeated use and mechanical loads.
• Compliance with global standards including RoHS 3 and REACH, ensuring safety and environmental responsibility for international projects.

Professional Applications & Engineering Value

This 1/4"-20 shoulder screw is engineered to address critical alignment and load-bearing challenges in industrial machinery, automation systems, and precision equipment. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for applications in moist or chemically aggressive environments. The UNC coarse threads and external hex drive facilitate quick and secure fastening, reducing downtime during maintenance or assembly. The extended 1-3/4" shoulder length ensures precise location of moving parts, such as in pivoting mechanisms or bearing mounts, preventing misalignment and wear. With a high tensile strength of 70,000 psi, it reliably supports dynamic loads in conveyor systems, robotics, and other demanding industrial applications, enhancing overall equipment reliability and longevity.

Specification Summary & Compliance

This shoulder screw features a 1/4"-20 UNC thread with Class 2A fit for precise tolerance, a shoulder diameter of 3/8" with tolerance from -0.004" to 0", and a shoulder length of 1-3/4" with tolerance of ±0.005". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in regulated industries and international markets.