S-91273A271 3/4"-10 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and reducing maintenance costs.
• Exceptional mechanical strength offering a 70,000 psi tensile strength and 35,000 psi shear strength for reliable performance in high-stress applications.
• Enhanced grip and anti-slip handling provided by the knurled socket head, ensuring secure tool engagement during installation and removal.
• Precision alignment and component location enabled by the 3/4" diameter shoulder, maintaining accurate part positioning in assemblies.
• Wide compatibility and easy installation with a standard 3/8" hex drive and coarse UNC threads, fitting common tools and reducing assembly time.
• Consistent and reliable thread fit due to Class 2A thread tolerance, ensuring smooth engagement and reducing the risk of cross-threading.
• 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 3/4"-10 UNC shoulder screw is engineered to address critical challenges in industrial assembly and precision machinery. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, extending service life in demanding conditions like manufacturing equipment and outdoor applications. The knurled socket head with a 3/8" hex drive ensures a firm grip, preventing tool slippage and reducing installation errors. The shoulder diameter of 3/4" acts as a precise pivot or bearing surface, allowing for accurate alignment of components such as gears, pulleys, and linkages. With a coarse thread and Class 2A fit, it offers quick assembly and reliable fastening in heavy-duty applications, minimizing downtime and enhancing overall system reliability.

Specification Summary & Compliance

This shoulder screw features a Class 2A thread fit for standard UNC applications, ensuring dimensional accuracy and interchangeability. Key specifications include a shoulder diameter of 3/4" with a tolerance of -0.004" to -0.002", and a shoulder length of 3/4" with a tolerance of -0.005" to 0.005" for precise engineering use. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and regulated industries. Manufactured to high standards, it meets the mechanical requirements with a Rockwell B55 hardness and tensile strength of 70,000 psi, supporting dependable performance in various technical applications.