S-92453A112 4-40 x 5/8" ASME B18.6.3 Brass Round Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-quality brass material, ensuring long-term reliability in humid or corrosive industrial environments.
• Easy installation and removal with a standard slotted drive, compatible with common tools for efficient assembly and maintenance.
• Reliable thread engagement thanks to 4-40 UNC coarse threading and Class 2A fit, reducing cross-threading risks and ensuring secure fastening.
• High mechanical strength with 50,000 psi tensile strength and Rockwell B40 hardness, providing durability under moderate stress conditions.
• Full threading along the 5/8" length for maximum grip and adjustability in various material thicknesses.
• Compliance with industry standards including ASME B18.6.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance in global markets.
• Versatile rounded head design offering a smooth, low-profile finish that minimizes snagging and enhances aesthetic appeal in visible applications.

Professional Applications & Engineering Value

This 4-40 UNC brass rounded head slotted screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly efficiency. The brass material provides excellent resistance to rust and galvanic corrosion, making it ideal for electrical enclosures, marine equipment, and plumbing systems where moisture is a concern. Its coarse UNC threading and Class 2A thread fit ensure quick, secure installation in soft materials or pre-tapped holes, reducing the risk of stripping. The slotted drive allows for straightforward manual or automated driving, while the fully threaded design maximizes holding power in dynamic environments. Commonly used in machinery, consumer electronics, and precision instruments, this screw delivers consistent performance where high tensile strength and regulatory compliance are critical.

Specification Summary & Compliance

This product features precise Class 2A thread fit per UNC standards, ensuring dimensional accuracy and interchangeability. It meets ASME B18.6.3 specifications for machine screws, guaranteeing consistent manufacturing quality. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms it is free from hazardous substances, supporting safe use in regulated industries. The screw is fully threaded, right-hand oriented, and manufactured to maintain 50,000 psi tensile strength and Rockwell B40 hardness for reliable mechanical performance.