S-97832A330 1/4"-28 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Precise component alignment with 2-1/2" shoulder length maintaining tight tolerances for accurate assembly positioning
• Enhanced torque transmission through knurled socket head and 5/32" hex drive preventing cam-out during installation
• Reliable thread engagement with Class 3A UNF fine threads ensuring vibration resistance in dynamic applications
• High mechanical strength delivering 70,000 psi tensile strength and 35,000 psi shear strength for demanding loads
• Consistent performance with Rockwell B55 hardness providing excellent wear resistance and durability
• Regulatory compliance assurance meeting ASME B18.3 standards for dimensional accuracy and quality

Professional Applications & Engineering Value

This precision shoulder screw addresses critical alignment challenges in industrial machinery, automation systems, and precision equipment assemblies. The 2-1/2" shoulder length with controlled diameter tolerance provides exact component spacing, eliminating misalignment issues that cause premature wear. The 18-8 Stainless Steel material offers excellent corrosion resistance for demanding environments, while the knurled socket head design ensures secure tool engagement during high-torque applications. The 1/4"-28 UNF fine thread with Class 3A fit maintains secure fastening under vibration, making it ideal for rotating assemblies and precision mechanisms where positional accuracy and reliability are paramount.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit for superior dimensional accuracy. The shoulder diameter maintains -0.004" to -0.002" tolerance while shoulder length holds -0.005" to 0.005" tolerance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial applications.