S-92183A312 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and washdown applications.
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable performance in high-stress assemblies.
• Precision alignment and secure pivoting ensured by the 5/16" shoulder with tight diameter tolerance, reducing wear on mating components.
• Fast, secure installation with a 5/32" hex socket drive and knurled head for improved grip and reduced tool slippage during torque application.
• Consistent, reliable thread engagement from the 1/4"-20 UNC coarse thread with Class 3A fit, providing superior vibration resistance and easier assembly.
• Broad application versatility with a customizable shoulder length (0.13"-1.99") to accommodate various design requirements and spacing needs.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safety and regulatory acceptance for international markets.

Professional Applications & Engineering Value

This 18-8 Stainless Steel Socket Head Shoulder Screw is engineered to address critical alignment and durability challenges in demanding mechanical systems. The precision-machined 5/16" shoulder acts as a reliable pivot point or locating dowel, minimizing misalignment and component wear in assemblies like rotating machinery, automation equipment, and precision instruments. The 1/4"-20 UNC coarse thread with Class 3A fit ensures robust, vibration-resistant fastening, while the knurled socket head enhances tool engagement for secure installation in confined spaces. Made from corrosion-resistant 18-8 Stainless Steel and hardened to Rockwell B55, this screw withstands harsh operational environments, making it an ideal choice for industrial machinery, automotive fixtures, and conveyor systems where precision and long-term reliability are paramount.

Specification Summary & Compliance

This shoulder screw adheres to inch system measurements with a 1/4"-20 UNC coarse thread manufactured to a precise Class 3A thread fit. The shoulder diameter is held to a tight tolerance of -0.004" to -0.002", and the shoulder length tolerance is -0.002" to 0.002" for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.