S-97768A235 8-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional Durability: 18-8 Stainless Steel construction ensures excellent corrosion resistance and long service life in harsh environments.
• High Tensile & Shear Strength: Withstands up to 70,000 psi tensile and 35,000 psi shear loads for reliable performance in demanding applications.
• Precision Fit & Assembly: Class 3A thread fit guarantees tight tolerances and secure fastening, reducing the risk of loosening under vibration.
• Enhanced Torque Application: Knurled socket head with hex drive allows for maximum torque transfer and easy installation without slippage.
• Superior Corrosion Protection: Black Oxide finish provides an added layer of resistance against rust and oxidation.
• Optimized for Industrial Use: UNC coarse threading enables quick assembly and disassembly, ideal for high-volume production lines.
• Regulatory Compliance: Meets ASME B18.3 standards and is RoHS 3 & REACH compliant, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This 18-8 Stainless Steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and heavy-duty equipment. The UNC coarse thread and Class 3A fit ensure rapid, secure fastening while maintaining alignment in assemblies subject to vibration and dynamic loads. The black oxide finish enhances corrosion resistance, making it suitable for environments exposed to moisture or chemicals. The knurled socket head design allows for high-torque installation, reducing the risk of tool slippage and damage during maintenance. Ideal for use in robotics, conveyor systems, and fixture manufacturing, this screw provides reliable performance where dimensional accuracy and high tensile strength (70,000 psi) are paramount.

Specification Summary & Compliance

This shoulder screw features a 8-32 UNC thread with a Class 3A fit for precise threading and secure engagement. The shoulder diameter is 1/4" with a tight tolerance of -0.004" to -0.002", and the shoulder length is 3/16" with a tolerance of -0.005" to 0.005". Manufactured in compliance with ASME B18.3 standards, it also meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial reliability.