S-91790A310 12-24 x 3/8" ASME B18.6.3 Stainless Steel Slotted Oval Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Exceptional mechanical strength offering 80,000 psi tensile strength and Rockwell B80 hardness for reliable, long-term fastening
• Precision thread engagement with Class 2A fit and UNC coarse threads ensuring easy installation and vibration resistance
• Flush, professional appearance thanks to the undercut oval head design and 82° countersink angle for seamless surface mounting
• Full threading along the 3/8" length provides maximum grip and uniform load distribution across connected materials
• Compliance with major industry standards including ASME B18.6.3, ensuring interchangeability and engineering reliability
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance for safe use in regulated applications

Professional Applications & Engineering Value

This 12-24 UNC oval head slotted machine screw delivers critical performance in demanding applications where both aesthetics and durability matter. The 18-8 stainless steel material, combined with a passivated finish, resists oxidation and chemical exposure, making it suitable for machinery, electronic enclosures, and outdoor equipment. The undercut oval head and 82° countersink angle allow the screw to sit flush with surfaces, reducing snagging risks and improving airflow or cleaning access. With coarse thread spacing and Class 2A thread fit, it offers quick assembly and maintains clamp force under dynamic loads, preventing loosening in vibrating systems. Fully threaded for consistent holding power, this screw is a trusted choice for OEMs and maintenance teams requiring ASME B18.6.3-compliant fasteners that meet strict quality and regulatory demands.

Specification Summary & Compliance

This machine screw adheres to Class 2A thread fit tolerances and UNC thread standards for consistent performance. Manufacturing and dimensional criteria follow ASME B18.6.3, ensuring precise head diameter (0.412"), length (3/8"), and thread diameter (0.216"). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances for industrial and international use.