S-92443A110 4-40 x 1/2" ASME B18.6.3 Brass Binding Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with brass construction for long-lasting performance in harsh environments.
• Easy installation and removal thanks to the slotted drive design, compatible with standard screwdrivers.
• Reliable thread engagement with Class 2A fit and coarse UNC threading, ensuring secure fastening in various materials.
• High tensile strength of 50,000 psi and Rockwell B40 hardness for dependable load-bearing in demanding applications.
• Wide, rounded binding head provides a low-profile, secure fit that resists loosening under vibration.
• Full threading along the 1/2" length offers maximum grip and adjustment flexibility.
• Compliance with industry standards including ASME B18.6.3, RoHS 3, and REACH for guaranteed safety and quality.

Professional Applications & Engineering Value

These 4-40 UNC brass rounded head slotted screws are engineered to address common industrial challenges such as corrosion, vibration loosening, and the need for precise, reliable fastening. The brass material inherently resists rust and galvanic corrosion, making these screws ideal for electrical components, marine equipment, and plumbing systems where moisture exposure is a concern. The binding head style with a wide profile distributes clamping force evenly, reducing the risk of damage to soft materials while maintaining a secure hold. With a coarse thread spacing and Class 2A thread fit, they provide quick assembly and robust performance in wood, plastic, and light metal applications, ensuring reduced installation time and enhanced operational reliability in automated machinery, consumer electronics, and precision instruments.

Specification Summary & Compliance

This product adheres to ASME B18.6.3 specifications for dimensional accuracy and performance. Threads are manufactured to UNC standards with Class 2A fit, ensuring precise tolerances for consistent fastening. The screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming they are free from hazardous substances and safe for use in environmentally sensitive applications. Additional details include a right-hand thread direction, fully threaded design, and binding head style with a 0.235" diameter, all meeting rigorous industrial requirements for quality and reliability.