S-90292A148 3/8"-16 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with 17-4 PH Stainless Steel construction, offering 130,000 psi tensile strength and Rockwell C28 hardness for long-lasting performance in demanding environments.
• Precise alignment and reduced wear thanks to the 1/2" shoulder diameter with tight tolerances, ensuring accurate component positioning and minimizing assembly stress.
• Reliable thread engagement with Class 3A thread fit and coarse UNC threading, providing secure fastening and resistance to vibration loosening.
• Easy installation and removal featuring a hex socket drive and knurled head for improved grip, allowing for efficient maintenance with standard tools.
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety, quality, and environmental responsibility for global applications.
• High shear resistance with a minimum shear strength of 65,000 psi, making it ideal for heavy-duty mechanical assemblies subject to lateral forces.
• Versatile right-hand threading in 3/8"-16 UNC size, compatible with common industrial components for broad usability.

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw is engineered to address critical challenges in industrial settings, such as misalignment and component wear. Made from 17-4 PH Stainless Steel, it combines high corrosion resistance with superior mechanical properties, ensuring reliability in harsh conditions like machinery, automotive, and aerospace assemblies. The Class 3A thread fit and precise shoulder dimensions minimize play, reducing the risk of premature failure and maintenance downtime. With a hex socket drive and knurled head, it offers easy handling in tight spaces, while its compliance with ASME B18.3 and environmental regulations like RoHS and REACH makes it a trusted choice for engineers seeking durability and regulatory adherence in precision applications.

Specification Summary & Compliance

This shoulder screw features a Class 3A thread fit with UNC threading for high precision, a shoulder diameter of 1/2" (tolerance: -0.004" to -0.002"), and a shoulder length of 1/2" (tolerance: -0.005" to 0.005"). It meets ASME B18.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it adheres to industry standards for safety and environmental responsibility.