S-90298A847 5/8"-11 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
• Precise alignment and smooth rotation thanks to the 3" shoulder with tight diameter and length tolerances for reliable assembly.
• Superior thread engagement and vibration resistance provided by the Class 3A thread fit and coarse UNC thread for secure fastening.
• High mechanical strength and durability with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications.
• Secure and easy installation using the 3/8" hex socket drive and knurled head for improved grip and torque application.
• Guaranteed dimensional consistency and interchangeability as it meets the stringent ASME B18.3 standard.
• Safe and environmentally compliant usage ensured by RoHS 3 and REACH compliance, free from hazardous substances.

Professional Applications & Engineering Value

This 5/8"-11 UNC shoulder screw is engineered to address critical alignment and rotational challenges in industrial machinery, automated systems, and precision equipment. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to corrosion and wear, extending service life in demanding conditions. The 3" shoulder length with minimal tolerances ensures precise component positioning, reducing misalignment and wear on moving parts. The Class 3A thread fit and coarse UNC thread enhance vibration resistance and ease of assembly, making it ideal for high-stress applications where reliability is paramount. Its hex socket drive and knurled head facilitate secure installation, improving efficiency in maintenance and production lines.

Specification Summary & Compliance

This shoulder screw features a Class 3A thread fit with 5/8"-11 UNC coarse threads and a right-hand thread direction. The shoulder has a diameter of 3/4" with a tolerance of -0.001" to 0.001" and a length of 3" with a tolerance of -0.005" to 0.005". It is manufactured in compliance with ASME B18.3 specifications and is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to international safety and environmental standards.