S-94035A225 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 Stainless Steel construction and a passivated finish, ensuring long-term reliability in harsh environments.
• Exceptional mechanical strength with a tensile strength of 70,000 psi and Rockwell B55 hardness for dependable performance under high-stress conditions.
• Precise alignment and smooth rotation enabled by the accurately machined 2-1/4" shoulder with minimal diameter and length tolerances.
• Reliable and secure fastening from the Class 2A thread fit and 1/4"-20 UNC coarse threads, providing excellent grip and vibration resistance.
• Easy installation and removal using a standard 5/32" hex key, facilitated by the smooth, socket head design for efficient assembly.
• Compliance with strict environmental regulations, being RoHS 3 and REACH compliant, making it suitable for global industrial applications.
• Versatile right-hand threading for common assembly needs, ensuring compatibility with a wide range of components and machinery.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment and durability challenges in industrial settings. The 18-8 Stainless Steel material, combined with a passivated finish, offers robust protection against corrosion, making it ideal for applications in moist or chemically aggressive environments like machinery, automotive assemblies, and electronic enclosures. The 2-1/4" shoulder length provides a stable pivot or spacer, reducing wear on moving parts and ensuring precise component positioning. With a Class 2A thread fit and UNC coarse threads, it delivers secure fastening that resists loosening under vibration, while the hex socket head allows for easy torque application in confined spaces. This screw is a reliable solution for engineers seeking longevity and performance in industrial fastening systems.

Specification Summary & Compliance

This shoulder screw adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and a shoulder diameter tolerance of -0.001" to 0" with length tolerance of 0" to 0.002" for accurate assembly. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for use in regulated industries. Manufactured with a UNC thread type and right-hand direction, it aligns with common industrial specifications for reliable performance.