S-99154A370 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under high-stress conditions.
• Precise alignment and pivot functionality enabled by the 1/2" shoulder length with a controlled diameter tolerance for accurate component positioning.
• Easy installation and space-saving design with the low-profile socket head, allowing for use in confined spaces and providing a secure drive.
• Consistent and reliable threading with UNC coarse threads and Class 2A fit, ensuring smooth assembly and vibration resistance.
• Compliance with stringent environmental regulations, being RoHS 3 and REACH compliant for safe and responsible use in global markets.
• Right-hand thread direction for standard, intuitive installation in a wide range of machinery and equipment.

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw is engineered to address critical alignment and mounting challenges in precision assemblies. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, making it suitable for applications in industrial machinery, automotive systems, and electronic enclosures where environmental factors are a concern. The low profile socket head design minimizes protrusion, allowing for compact designs without compromising on drive security. The precise shoulder diameter and length ensure components are held securely with minimal play, reducing wear and maintaining alignment over time. This screw is ideal for use as a pivot, axle, or spacer in mechanisms requiring exact tolerances and durable performance.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent engagement. The shoulder diameter is maintained at 3/16" with a tight tolerance of -0.001" to 0", and the shoulder length is 1/2" with a tolerance of 0" to 0.002" for precise fits. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring compliance with environmental and safety standards for industrial components.