S-91054A450 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Superior surface hardness and wear resistance provided by the TiCN coating, reducing galling and extending the component's lifespan.
• High tensile strength of 70,000 psi ensures reliable performance and structural integrity under significant load and stress.
• Precise shoulder fit with tight diameter tolerance guarantees accurate alignment and smooth rotation in assemblies, minimizing play and vibration.
• Easy installation and high torque capability with the 1/4" hex socket drive, allowing for secure fastening in confined spaces.
• Wide compatibility and reliable fastening due to the standard 3/8"-16 UNC coarse thread with Class 2A fit, ensuring consistent engagement.
• Compliance with major environmental regulations including RoHS 3 and REACH, making it suitable for global supply chains and sensitive applications.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to solve critical alignment and rotational challenges in demanding assemblies. The 1/2" diameter shoulder with its precise fit tolerance acts as a reliable pivot or axle, eliminating the need for additional bushings and reducing assembly complexity. Manufactured from 18-8 Stainless Steel and enhanced with a TiCN coating, it provides excellent resistance to corrosion and wear, which is vital in applications like machinery, automation systems, and conveyor assemblies where metal-on-metal contact is frequent. The UNC coarse thread and 70,000 psi tensile strength ensure it can withstand high dynamic loads and vibrations, making it a robust choice for securing moving parts in industrial equipment, thereby reducing maintenance downtime and improving operational reliability.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit for consistent assembly and features a shoulder diameter tolerance of -0.002" to 0" and a shoulder length tolerance of 0" to 0.003" for precise location. It conforms to the UNC thread standard (3/8"-16) and is manufactured to provide a Rockwell B55 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.