S-92183A373 1/2"-13 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Superior clamping force and load distribution from the precision shoulder, minimizing component wear and ensuring stable assembly alignment.
• High-strength performance under stress with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications.
• Reliable, vibration-resistant thread engagement due to the Class 3A thread fit and coarse UNC thread, preventing loosening.
• Secure, non-slip installation and removal enabled by the knurled head and hex socket drive, allowing for high-torque application.
• Consistent dimensional accuracy with tight shoulder diameter and length tolerances, ensuring precise fit and repeatability in automated processes.
• Compliance with global environmental standards including RoHS 3 and REACH, making them suitable for regulated industries and international supply chains.

Professional Applications & Engineering Value

This 18-8 stainless steel shoulder screw is engineered to address critical challenges in precision assembly and motion control systems. The knurled head and hex socket drive provide a secure grip for high-torque installation, reducing the risk of tool slippage and head stripping in confined spaces. The Class 3A thread fit and coarse UNC thread ensure rapid assembly and superior vibration resistance, which is vital for machinery subjected to dynamic loads. The precision-ground shoulder acts as a pivot, bearing surface, or locator, maintaining exact alignment in robotic arms, conveyor systems, and fixturing jigs. Manufactured from corrosion-resistant stainless steel with a Rockwell B55 hardness, it offers long-term reliability in environments exposed to moisture, chemicals, and wear, reducing maintenance frequency and downtime.

Specification Summary & Compliance

This shoulder screw adheres to UNC coarse thread standards with a 1/2"-13 thread size and a precision Class 3A thread fit for consistent, reliable engagement. The shoulder diameter tolerance is maintained between -0.004" to -0.002", and the shoulder length tolerance from -0.002" to 0.002", ensuring high dimensional accuracy for precise assemblies. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated industrial applications.