S-90337A447 10-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
• High mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-lasting performance under load.
• Precise component alignment enabled by the smooth, precisely machined shoulder with minimal diameter tolerance (-0.001" to 0").
• Secure, low-profile fastening with a low socket head and 1/8" hex drive, allowing for compact designs and easy installation in tight spaces.
• Accurate and reliable threading featuring a 10-32 UNF fine thread with Class 2A fit, ensuring consistent engagement and vibration resistance.
• Extended bearing surface provided by the 1-1/2" shoulder length, distributing load effectively and reducing wear on assembled parts.
• Global regulatory compliance meeting RoHS 3 and REACH standards, ensuring safety and environmental responsibility for international projects.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to solve critical alignment and pivot point challenges in demanding applications. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to corrosion and oxidation, making it suitable for machinery, automotive assemblies, and electronic enclosures exposed to moisture or chemicals. The low socket head design with a hex drive ensures a flush fit and secure torque application, preventing stripping and allowing for high clamp force. The 1-1/2" shoulder length acts as a precise datum for rotating parts like gears and pulleys, minimizing misalignment and reducing bushing wear. With a 10-32 UNF fine thread and Class 2A fit, it delivers reliable fastening in high-vibration environments, ensuring long-term operational integrity and reduced maintenance needs.

Specification Summary & Compliance

This shoulder screw adheres to inch system measurements with a 10-32 UNF thread and Class 2A thread fit for precise tolerance. The shoulder features a diameter of 1/4" with a tolerance of -0.001" to 0" and a length of 1-1/2" with a tolerance of 0" to 0.002", ensuring exact precise shoulder fit. Manufactured from 18-8 stainless steel with a passivated finish, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming its suitability for regulated and environmentally conscious industrial applications.