S-90275A190 8-32 x 1/4" ASME B18.6.3 Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in harsh industrial environments.
• High tensile strength of 60,000 psi provides reliable fastening for demanding applications, reducing the risk of failure under stress.
• Rockwell B70 hardness enhances durability and wear resistance, extending the screw's service life in repetitive use scenarios.
• Class 2A thread fit with UNC coarse spacing ensures easy installation and secure grip, minimizing cross-threading and assembly time.
• 82° countersink angle with undercut flat head allows for flush mounting, improving aesthetics and safety in finished products.
• Fully threaded design offers consistent holding power along the entire length, ideal for varied material thicknesses.
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees quality and environmental safety, meeting global regulatory standards.

Professional Applications & Engineering Value

This 8-32 UNC flat head slotted screw is engineered to address common industrial challenges, such as vibration loosening and corrosion in machinery assemblies. Made from zinc-plated steel, it provides excellent protection against rust, making it suitable for outdoor equipment, automotive components, and electronic enclosures. The coarse thread spacing and Class 2A thread fit ensure quick, reliable installation in materials like metal and plastic, reducing assembly errors. With an 82° countersink angle and undercut flat head, it sits flush to prevent snagging and improve aerodynamics in applications like aerospace or consumer electronics. These features, combined with high tensile strength and full threading, deliver consistent performance in industrial fastening where precision and durability are critical.

Specification Summary & Compliance

This screw adheres to precise Class 2A thread fit and UNC coarse thread standards, ensuring dimensional accuracy for reliable mating. It meets ASME B18.6.3 manufacturing specifications for flat head screws, guaranteeing consistent quality. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for various industrial and consumer applications.