S-91273A633 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
• Precise component alignment ensured by the 1-1/2" shoulder with tight tolerances for reliable assembly.
• High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for demanding applications.
• Enhanced grip and reduced slipping from the knurled head combined with a hex socket drive for secure installation.
• Durable wear and corrosion protection via the black oxide finish, extending service life.
• Wide compatibility with 3/8"-16 UNC coarse threads and Class 2A fit for easy integration into standard systems.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable use.

Professional Applications & Engineering Value

This 18-8 stainless steel shoulder screw is engineered to address critical alignment and durability challenges in industrial machinery and precision equipment. The 3/8"-16 UNC coarse thread and precisely machined shoulder provide stable positioning for rotating parts, reducing wear and misalignment. The black oxide finish enhances corrosion resistance, while the knurled head with hex drive ensures secure handling during assembly. Ideal for applications requiring high tensile strength and reliable performance, this fastener supports efficient maintenance and long-term operational integrity in demanding settings.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit and UNC standards for consistent performance. Shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", ensuring precise dimensions. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting environmental safety and regulatory requirements.