S-94564A242 4-40 x 3/8" Set Screws

Key Features & Benefits at a Glance

• Corrosion-resistant nylon construction ensures long-lasting performance in humid or chemically exposed environments without rust or degradation.
• Headless hex drive design allows for flush installation in tight spaces, providing a clean finish and preventing snagging.
• Class 2A thread fit with UNC coarse threading delivers reliable engagement and easy assembly, reducing cross-threading risks in industrial applications.
• Flat tip configuration offers precise component positioning and minimal surface marring, ideal for delicate assemblies.
• Wide operating temperature range (-40° to 185°F) maintains integrity in both freezing and moderate heat conditions.
• RoHS 3 compliance guarantees environmentally safe use, meeting strict regulatory standards for hazardous substance restrictions.
• Lightweight off-white nylon material provides electrical insulation and vibration damping, enhancing safety in electronic or moving parts.

Professional Applications & Engineering Value

This 4-40 UNC nylon plastic set screw is engineered to address common industrial challenges like corrosion, weight, and electrical conductivity. Its headless design with a 3/64" hex drive enables secure fastening in confined areas, such as electronic enclosures or machinery where protruding hardware is impractical. The nylon material resists chemicals and moisture, eliminating galvanic corrosion risks when used with dissimilar metals. With a flat tip, it ensures accurate alignment without damaging sensitive surfaces, making it perfect for positioning components in assemblies like sensors, gears, or plastic housings. The coarse UNC threads provide quick installation and reliable holding power, while the temperature resilience supports stable performance across varying operational conditions, from outdoor equipment to indoor devices.

Specification Summary & Compliance

This set screw adheres to inch system measurements with a 4-40 UNC coarse thread and Class 2A thread fit for standard dimensional accuracy and interchangeability. It meets RoHS 3 (2015/863/EU) compliance, ensuring it is free from hazardous substances. The specifications include a right-hand thread direction, 3/8" length, and flat tip type, manufactured to provide consistent performance in precision fastening applications.