S-90337A332 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for extended service life in harsh environments
• Precise component alignment ensured by the 1" shoulder with tight diameter tolerance for reduced vibration and wear
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding industrial applications
• Reliable thread engagement with Class 2A UNC coarse threads providing secure fastening and easy assembly
• Space-saving low-profile design featuring a smooth socket head that fits flush in confined spaces
• Enhanced drive stability through hex drive design preventing cam-out during installation
• Full regulatory compliance meeting RoHS 3 and REACH standards for safe use across global markets

Professional Applications & Engineering Value

This 1/4"-20 UNC shoulder screw delivers exceptional engineering value in precision machinery and industrial equipment. The 18-8 stainless steel construction combined with passivated finish provides superior corrosion resistance, critical for manufacturing environments exposed to moisture and chemicals. The precisely machined 1" shoulder length with tight diameter tolerance ensures accurate component alignment in rotating assemblies, reducing vibration and premature wear in applications ranging from conveyor systems to robotic arms. The low profile socket head with hex drive allows for secure installation in space-constrained designs while maintaining high 70,000 psi tensile strength for heavy-duty fastening requirements. These shoulder screws are engineered to solve alignment challenges while providing long-term reliability in demanding industrial settings.

Specification Summary & Compliance

This precision shoulder screw features Class 2A thread fit with UNC coarse thread spacing, ensuring consistent performance across industrial applications. Manufacturing tolerances include shoulder diameter tolerance of -0.001" to 0" and shoulder length tolerance of 0" to 0.002" for precise dimensional control. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety standards for industrial components.