S-97381A301 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Lightweight durability with 6061 aluminum construction, offering excellent corrosion resistance for extended service life in demanding environments.
• Precise component alignment ensured by the 1/4" shoulder diameter with tight tolerances, reducing assembly errors and improving product reliability.
• High load-bearing capacity with 40,000 psi tensile strength and 20,000 psi shear strength, providing robust performance in mechanical applications.
• Secure and efficient installation through the knurled socket head and 1/8" hex drive, preventing tool slippage and speeding up assembly processes.
• Reliable thread engagement with Class 3A UNC coarse threads, ensuring consistent fastening and vibration resistance in industrial settings.
• Regulatory compliance assurance meeting ASME B18.3 standards, RoHS 3, and REACH, supporting global supply chain requirements and environmental safety.
• Versatile application fit with a 3/8" thread length and right-hand thread direction, suitable for various machinery, pivots, and rotating assemblies.

Professional Applications & Engineering Value

Engineered for precision, this 10-24 UNC aluminum shoulder screw addresses common industrial challenges like misalignment and component wear. The 6061 aluminum material offers a optimal strength-to-weight ratio, ideal for applications where reducing overall mass is critical without sacrificing 40,000 psi tensile strength. The knurled socket head and hex drive design facilitate quick, secure installations in tight spaces, minimizing downtime in production lines. Commonly used in machinery, robotics, and electronic enclosures, the coarse thread and Class 3A thread fit enhance vibration resistance, ensuring long-term stability in dynamic environments. Its compliance with ASME B18.3 and environmental regulations makes it a reliable choice for OEMs and MRO professionals seeking durable, compliant fastening solutions.

Specification Summary & Compliance

This shoulder screw features precise dimensions, including a 10-24 UNC thread with Class 3A fit for consistent tolerance control. The shoulder diameter is 1/4" with a tolerance of -0.004" to -0.002", and shoulder length is 1/4" with -0.005" to 0.005" tolerance, ensuring accurate alignment. It is manufactured in accordance with ASME B18.3 specifications and is compliant with RoHS 3 (2015/863/EU) under exemption 6(b)-II for lead in aluminum alloys, as well as REACH (EC 1907/2006) standards, supporting safe and sustainable industrial use.