S-90337A347 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Enhanced alignment precision due to the precisely machined 1/2" diameter shoulder with tight tolerances (±0.002")
• High mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing applications
• Secure and efficient installation with a low-profile hex socket head design that prevents cam-out and allows for compact assemblies
• Wide compatibility and easy assembly with standard 3/8"-16 UNC coarse threads in Class 2A fit
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in various industries
• Durable performance with a smooth head texture and right-hand thread direction for long-term operational stability

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment challenges in industrial machinery, automation systems, and precision equipment. The 1/2" diameter shoulder provides a stable bearing surface that eliminates misalignment and reduces wear on moving parts, while the 18-8 stainless steel material with passivated finish ensures resistance to corrosion and chemical exposure. The hex socket head with low-profile design allows for tight spaces and secure torque application, making it ideal for applications requiring repeated adjustments. Its 3/8"-16 UNC coarse threads and Class 2A fit facilitate quick assembly and disassembly, enhancing maintenance efficiency in high-stress environments like robotics, conveyor systems, and fixture manufacturing.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent engagement and ease of assembly. The shoulder diameter is manufactured to a tight tolerance of -0.001" to 0", and the shoulder length tolerance is maintained between 0" to 0.002" to ensure precise alignment. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for industrial applications without hazardous substances.