S-91273A685 5/8"-11 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction 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 reliable performance in demanding applications.
• Precise alignment and secure positioning due to the standard shoulder diameter and length, minimizing component misalignment.
• Easy installation and removal with a 5/16" hex socket drive and knurled head texture, providing superior grip and torque application.
• Durable and wear-resistant thanks to Rockwell B55 hardness, ensuring long service life under repetitive stress.
• Accurate and consistent threading with UNC coarse threads and Class 2A fit, facilitating quick assembly and reducing cross-threading risks.
• Compliance with environmental and safety standards including RoHS 3 and REACH, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This 5/8"-11 UNC shoulder screw is engineered to address critical challenges in precision machinery and heavy-duty equipment. The 18-8 Stainless Steel material combined with a Black Oxide finish offers superior resistance to rust and corrosion, making it suitable for applications in moist or chemically aggressive environments. The socket head design with a knurled texture ensures secure tool engagement and prevents slippage during high-torque installations, reducing downtime. Its standard shoulder provides exact axial positioning for rotating parts like bearings and pulleys, minimizing vibration and wear. Ideal for use in automotive assemblies, conveyor systems, and industrial robots, this shoulder screw delivers reliable fastening where alignment accuracy and high tensile strength are paramount, enhancing overall operational efficiency and safety.

Specification Summary & Compliance

This shoulder screw adheres to UNC coarse thread standards with a Class 2A thread fit for precise tolerance. Key dimensions include a thread size of 5/8"-11, shoulder diameter of 5/8" (tolerance: -0.004" to -0.002"), and shoulder length of 1/2" (tolerance: -0.005" to 0.005"). Manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory conformity for industrial use.