S-90298A559 10-24 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 and extended service life.
• Exceptional thread reliability due to Class 3A fit, ensuring precise, secure engagement and reducing the risk of assembly failures.
• Enhanced grip and torque application from the knurled socket head, allowing for easier installation and removal with standard hex tools.
• High strength and durability with a tensile strength of 70,000 psi and Rockwell B55 hardness, supporting heavy-duty mechanical applications.
• Accurate component alignment provided by the 3/8" shoulder length and 1/4" shoulder diameter, minimizing part movement and wear.
• Broad compatibility with UNC coarse threads and right-hand direction, conforming to common assembly standards for versatile use.
• Regulatory compliance and safety meeting ASME B18.3, RoHS 3, and REACH standards, ensuring environmental and health safety in global markets.

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and heavy-duty equipment. The 18-8 stainless steel material offers excellent resistance to rust and corrosion, making it suitable for applications in moist or chemically aggressive environments. With a Class 3A thread fit and coarse UNC thread, it ensures fast, reliable assembly while reducing cross-threading risks. The knurled socket head enhances tool grip, facilitating efficient maintenance in tight spaces. Commonly used in pivots, axles, and spacers, this screw provides stable shoulder support to prevent misalignment and extend the lifespan of moving components, delivering consistent performance in industrial fastening solutions.

Specification Summary & Compliance

This shoulder screw features precise dimensions including a 3/8" shoulder length and 1/4" shoulder diameter with tight tolerances (e.g., shoulder diameter tolerance of -0.004" to -0.002"). It adheres to UNC coarse thread standards with a Class 3A thread fit for high accuracy. Manufactured in compliance with ASME B18.3 specifications, it also meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for international industrial use.