S-91273A718 3/4"-10 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and black oxide finish, ideal for harsh industrial environments.
• High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications.
• Precise alignment and smooth rotation ensured by the 3" shoulder length with tight diameter and length tolerances.
• Secure, non-slip installation thanks to the knurled head and 3/8" hex drive for reliable torque application.
• Easy assembly and disassembly with coarse 3/4"-10 UNC threads and Class 2A fit for quick, accurate engagement.
• Durable, long-lasting performance backed by Rockwell B55 hardness and compliance with RoHS 3 and REACH regulations.
• Versatile industrial use in machinery, pivots, and guides due to the robust shoulder design and right-hand thread.

Professional Applications & Engineering Value

This 3/4"-10 UNC shoulder screw is engineered to address critical challenges in industrial applications where precision alignment and high strength are paramount. The 18-8 stainless steel construction, enhanced by a black oxide finish, provides excellent resistance to corrosion and wear, reducing maintenance in demanding environments like assembly lines or outdoor equipment. The 3" shoulder length with controlled tolerances ensures accurate component spacing and smooth rotational movement, minimizing friction and wear in pivoting mechanisms or guide systems. Combined with the coarse UNC thread and Class 2A fit, it facilitates rapid installation and reliable performance in high-vibration settings, making it a trusted choice for engineers seeking durability and efficiency in heavy-duty shoulder screw applications.

Specification Summary & Compliance

This shoulder screw adheres to precise specifications, including a Class 2A thread fit for consistent engagement and a shoulder diameter tolerance of -0.004" to -0.002" with length tolerance of -0.005" to 0.005" for exact alignment. It meets UNC thread standards and is manufactured to ensure reliability under loads up to 70,000 psi tensile strength. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming its safety and environmental standards for global industrial use.