S-94564A227 4-40 x 1/8" Set Screws

Key Features & Benefits at a Glance

• Corrosion-resistant nylon construction ensures reliable performance in humid or chemically exposed environments without rust or degradation.
• Excellent electrical insulation properties prevent electrical conductivity, making it ideal for sensitive electronic assemblies.
• Wide temperature tolerance from -40° to 185°F maintains structural integrity in varying thermal conditions.
• Compact 1/8" length and headless design allows for discreet installation in space-constrained applications.
• Precise 3/64" hex drive provides secure tool engagement for consistent torque application and reduced stripping risk.
• Class 2A thread fit with UNC coarse threading offers easy assembly and reliable holding power in plastic or soft materials.
• RoHS 3 compliance guarantees environmental safety and adherence to international regulatory standards.

Professional Applications & Engineering Value

This 4-40 UNC nylon plastic set screw is engineered to address common industrial challenges such as galvanic corrosion, electrical shorting, and weight reduction in precision assemblies. The off-white nylon material provides inherent resistance to moisture, chemicals, and UV exposure, eliminating the need for additional coatings. Its non-conductive properties make it indispensable in electronics, telecommunications, and medical devices where electrical isolation is critical. The flat tip design ensures minimal surface marring on shafts or components, while the coarse UNC thread facilitates quick installation in thermoplastic housings, control panels, and adjustment mechanisms. Ideal for applications requiring repeated adjustments without thread wear, this screw combines durability with maintenance-free operation.

Specification Summary & Compliance

This set screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy and assembly ease. The right-hand thread direction and coarse thread spacing ensure secure fastening in various materials. Manufactured to meet RoHS 3 (2015/863/EU) compliance, it is free from hazardous substances, supporting global environmental and safety regulations. The flat tip and headless configuration provide flush mounting, while the specified temperature range of -40° to 185°F ensures performance stability across diverse operating conditions.