S-94035A223 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ensuring longevity in harsh industrial environments.
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable, high-stress fastening applications.
• Precise shoulder alignment with a 1-3/4" shoulder length and tight tolerances (±0.002"), enabling accurate component positioning and reduced assembly errors.
• Easy installation and removal via a 5/32" hex socket drive and smooth head texture, minimizing tool slippage and speeding up maintenance.
• Wide compatibility with UNC coarse threads and Class 2A fit, ensuring secure engagement and interchangeability in standard machinery.
• Compliance with environmental regulations, meeting RoHS 3 and REACH standards for safe, sustainable use in global markets.
• Durable right-hand thread design resistant to loosening under vibration, enhancing safety in dynamic operations.

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, provides excellent resistance to corrosion and wear, making it ideal for applications in machinery, automotive assemblies, and electronic enclosures exposed to moisture or chemicals. The 1-3/4" shoulder length with precise tolerances ensures components like gears, pulleys, or bearings are accurately positioned, reducing misalignment and extending equipment life. Featuring a UNC thread and Class 2A fit, it offers reliable fastening in high-vibration environments, while the socket head design allows for efficient installation in confined spaces. This screw delivers consistent performance, minimizing downtime and maintenance costs in industrial applications requiring robust, long-lasting fasteners.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for precise engagement, and features a shoulder diameter tolerance of -0.001" to 0" and length tolerance of 0" to 0.002" for accurate assembly. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.