S-90311A146 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and extended service life.
• High-strength performance offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable load-bearing in demanding applications.
• Vibration-resistant locking provided by the integrated nylon patch thread locker, maintaining clamp load integrity from -50° to 250°F.
• Precision Class 3A thread fit ensures tight tolerances and smooth assembly with reduced risk of cross-threading or loosening.
• Secure and efficient installation with a knurled socket head and 1/8" hex drive, allowing for high-torque application without slippage.
• Accurate alignment and spacing due to the consistent 1" shoulder length and 1/4" shoulder diameter, perfect for pivot points and rotating components.
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance.

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw is engineered to address critical challenges in industrial assembly, where vibration resistance and corrosion protection are paramount. The 316 stainless steel material provides excellent durability against chemicals and moisture, while the coarse UNC thread and Class 3A fit enable quick, precise engagement in machinery, automotive, and electronics applications. The nylon patch thread locker secures the fastener under dynamic loads, preventing unintended loosening and reducing maintenance needs. Its knurled socket head with a 1/8" hex drive ensures easy installation in confined spaces, making it a reliable choice for precision shoulder bolts in rotating assemblies and pivot mechanisms.

Specification Summary & Compliance

This shoulder screw features a 10-24 UNC coarse thread with Class 3A thread fit for high precision, a shoulder diameter of 1/4" with tolerance from -0.004" to -0.002", and a shoulder length of 1" with tolerance from -0.005" to 0.005". It complies with ASME B18.3 specifications for dimensional accuracy and is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations.