S-97832A192 4-40 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life.
• Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for reliable performance in high-stress applications.
• Precise alignment and spacing ensured by the 1 3/4" shoulder with standard fit and tight tolerances, reducing assembly errors.
• High-accuracy Class 3A thread fit provides secure, vibration-resistant fastening with 4-40 UNC coarse threads for quick assembly.
• Easy installation and removal using the 5/64" hex drive and knurled socket head, offering superior grip and torque application.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets.
• Durable and wear-resistant with Rockwell B55 hardness, maintaining integrity under repeated use and mechanical loads.

Professional Applications & Engineering Value

This 18-8 stainless steel shoulder screw is engineered to address critical challenges in precision assemblies, such as maintaining component alignment and resisting loosening under vibration. The 1 3/4" shoulder length with minimal tolerance variations ensures accurate positioning in machinery, pivots, and rotating parts, while the 4-40 UNC coarse thread and Class 3A fit deliver a tight, reliable connection that withstands dynamic loads. The knurled head and hex drive facilitate efficient installation in confined spaces, reducing labor time. Ideal for industrial equipment, automotive systems, and electronic enclosures, it combines high tensile strength and corrosion resistance to enhance durability and reduce maintenance in demanding environments.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A fit for precise thread engagement. Dimensions include a shoulder diameter of 1/8" with a tolerance of -0.004" to -0.002" and a shoulder length of 1 3/4" with a tolerance of -0.005" to 0.005". It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory acceptance in industrial applications.