S-97768A238 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
• Precise component alignment ensured by the 1/4" shoulder diameter with tight tolerances for reduced assembly play.
• High-strength performance delivering 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications.
• Superior wear resistance and reduced light reflection from the black oxide finish, extending service life.
• Secure, non-slip installation facilitated by the knurled socket head and hex drive for reliable torque transfer.
• Accurate and durable thread engagement with Class 3A UNC coarse threads for robust fastening.
• Full regulatory compliance meeting ASME B18.3, RoHS 3, and REACH for safe, global use.

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw is engineered to solve critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, making it suitable for machinery, automotive, and electronics where environmental factors are a concern. The 1/4" shoulder diameter with its controlled tolerance acts as a precise pivot or spacer, minimizing misalignment and wear in rotating parts like gears and pulleys. Combined with the black oxide finish, it reduces galling and offers a low-glare surface. The Class 3A thread fit and coarse UNC thread ensure quick assembly and high vibration resistance, which is vital for maintaining integrity in dynamic industrial applications. Its knurled socket head allows for secure tool engagement, preventing slippage during high-torque installations.

Specification Summary & Compliance

This shoulder screw features a 10-24 UNC thread with Class 3A fit for precise thread engagement, a shoulder diameter of 1/4" (tolerance: -0.004" to -0.002"), and shoulder length of 1/4" (tolerance: -0.005" to 0.005"). It is manufactured in compliance with ASME B18.3 standards and is certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to international safety and environmental regulations.