S-92443A108 4-40 x 3/8" 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 humid or corrosive environments
• Exceptional 50,000 psi tensile strength ensures reliable fastening in demanding mechanical applications
• Precision Class 2A thread fit provides smooth installation and consistent engagement with mating components
• Wide binding head profile offers enhanced bearing surface for secure fastening without surface damage
• Fully threaded design maximizes grip length and provides uniform load distribution
• Rockwell B40 hardness maintains thread integrity and prevents stripping during repeated use
• Slotted drive compatibility allows for quick installation with standard screwdrivers

Professional Applications & Engineering Value

Engineered for precision applications requiring reliable brass fasteners, these 4-40 UNC rounded head screws deliver exceptional performance in electrical enclosures, instrumentation, and marine equipment. The coarse thread design ensures rapid assembly while preventing cross-threading, while the wide binding head profile distributes clamping force evenly to prevent damage to sensitive materials. The fully threaded construction combined with 50,000 psi tensile strength provides secure fastening in vibration-prone environments, making these slotted drive screws ideal for maintenance, repair, and OEM applications where corrosion resistance and mechanical reliability are paramount.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 standards with precision Class 2A thread fit and UNC coarse threading. These 3/8" length screws feature a 0.235" head diameter and maintain full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors while meeting international quality and safety requirements.