S-97832A360 1/2"-13 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life.
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under high-stress applications.
• Precise alignment and reduced wear due to the 5/8" shoulder diameter and standard fit, ensuring accurate component positioning.
• Secure, non-slip fastening enabled by the knurled socket head and 5/16" hex drive, allowing for high-torque installation.
• Consistent and reliable thread engagement with Class 3A fit and 1/2"-13 UNC coarse thread, providing vibration resistance and easy assembly.
• Versatile shoulder length of 1 3/8" accommodates various component thicknesses, offering design flexibility.
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.

Professional Applications & Engineering Value

This shoulder screw is engineered to address critical alignment and durability challenges in industrial machinery, precision assemblies, and rotating equipment. The 18-8 Stainless Steel material offers excellent resistance to corrosion and oxidation, making it suitable for demanding environments like food processing, marine applications, and outdoor equipment. The 5/8" shoulder diameter and precise tolerances ensure minimal radial play, reducing wear on mating parts and maintaining alignment in pivots, gears, and linkages. The coarse UNC thread and Class 3A fit provide robust, vibration-resistant connections, while the knurled socket head allows for secure tool engagement during high-torque installations. This combination of features delivers long-term reliability, reduced maintenance, and enhanced performance in B2B technical applications.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit for high precision and UNC coarse thread standards. Shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", ensuring consistent dimensional accuracy. Manufactured in compliance with ASME B18.3 specifications, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial use.