S-90298A217 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.
• Precise alignment and smooth rotation ensured by the Class 3A thread fit and standard shoulder fit, reducing assembly errors.
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing in demanding applications.
• Secure, non-slip fastening thanks to the knurled head and hex socket drive, allowing for high-torque installation.
• Fine thread design (10-32 UNF) provides enhanced vibration resistance and superior clamping force compared to coarse threads.
• Strict dimensional tolerances on shoulder diameter and length ensure consistent fit and interchangeability in precision assemblies.
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and broad acceptability in global markets.

Professional Applications & Engineering Value

This stainless steel shoulder screw is engineered to address critical alignment and durability challenges in precision machinery, automation systems, and electronic enclosures. The 18-8 stainless steel material combined with a passivated finish resists oxidation and chemical exposure, extending service life in humid or corrosive settings. The 10-32 UNF fine thread and Class 3A fit minimize backlash and maintain tight tolerances under dynamic loads, while the 1/4" shoulder length provides a stable pivot or bearing surface for rotating components. Its hex socket drive and knurled head facilitate secure handling during installation, reducing the risk of tool slippage and damage in confined spaces. Ideal for use in industrial shoulder screw applications where reliability, precision, and regulatory compliance are paramount.

Specification Summary & Compliance

This shoulder screw adheres to UNF thread standards with a Class 3A fit for high-precision assemblies. Dimensional accuracy is maintained with shoulder diameter tolerance of -0.001" to 0.001" and shoulder length tolerance of -0.005" to 0.005". Manufactured from 18-8 stainless steel with a passivated finish, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring it is free of restricted substances and suitable for use in regulated industries.