S-94564A301 4-40 x 1 5/8" Set Screws

Key Features & Benefits at a Glance

• Excellent corrosion resistance from nylon plastic construction, eliminating rust issues in humid or chemical environments
• Secure Class 2A thread fit ensures precise engagement and reliable holding power in assembly applications
• Non-conductive and non-magnetic properties make these set screws ideal for electrical and electronic applications
• Wide temperature tolerance from -40° to 185°F maintains performance across diverse operating conditions
• Compact hex drive design with 3/64" drive size allows for easy installation in confined spaces
• Headless configuration with flat tip provides flush mounting without protruding components
• RoHS 3 compliance ensures environmental responsibility and regulatory acceptance

Professional Applications & Engineering Value

This 4-40 UNC nylon plastic set screw delivers exceptional value in applications where metal fasteners would compromise performance. The nylon construction provides inherent corrosion resistance, eliminating galvanic corrosion concerns when used with dissimilar metals. The Class 2A thread fit with coarse UNC threading ensures reliable engagement in plastic components and soft materials, preventing stripping while maintaining secure fastening. The headless design with flat tip creates flush surfaces ideal for rotating components and precision equipment. These set screws are particularly valuable in electrical applications where non-conductive properties prevent short circuits, and in situations requiring non-marring fasteners that won't damage sensitive surfaces. The temperature range from -40° to 185°F ensures consistent performance across industrial environments.

Specification Summary & Compliance

This 4-40 UNC set screw features precise Class 2A thread fit tolerances with coarse thread spacing and right-hand thread direction. The fastener measures 1 5/8" in length with 0.112" thread diameter and incorporates a 3/64" hex drive for installation. Manufactured from off-white nylon plastic with a flat tip design, this product is fully RoHS 3 (2015/863/EU) compliant, meeting current environmental regulations for hazardous substance restrictions.