S-94564A237 4-40 x 9/32" Set Screws

Key Features & Benefits at a Glance

• Non-conductive and corrosion-resistant nylon plastic construction ensures reliable performance in electrical applications and harsh environments without risk of galvanic corrosion.
• Hex drive design with 3/64" drive size provides secure tool engagement and high torque transmission, reducing the risk of stripping during installation.
• Flat tip design delivers superior holding power and minimal surface marring, ideal for securing components on shafts or against flat surfaces.
• Wide temperature resistance from -40°F to 185°F maintains mechanical integrity and dimensional stability in fluctuating thermal conditions.
• Coarse UNC 4-40 thread with Class 2A fit ensures easy assembly, quick engagement, and reliable fastening in various materials.
• Headless, right-hand thread configuration allows for flush mounting in tight spaces and straightforward installation with standard hex tools.
• RoHS 3 compliance guarantees environmental safety and meets international regulatory standards for hazardous substance restrictions.

Professional Applications & Engineering Value

This 4-40 UNC nylon plastic set screw is engineered to address common industrial challenges such as component slippage, electrical insulation requirements, and corrosion in sensitive assemblies. The off-white nylon material offers excellent dielectric properties, making it ideal for electronics, medical devices, and food processing equipment where metal fasteners could cause short circuits or contamination. Its hex drive and flat tip provide consistent clamping force without damaging shafts or gears, while the coarse thread ensures rapid installation in plastic or soft metal housings. With a temperature range of -40°F to 185°F, it performs reliably in both freezing and moderately heated environments, reducing maintenance needs and enhancing product lifespan in automotive, aerospace, and consumer goods applications.

Specification Summary & Compliance

This set screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy and ease of assembly. Key specifications include a thread size of 4-40, length of 9/32", and right-hand coarse threading. It is manufactured in compliance with RoHS 3 (2015/863/EU) regulations, ensuring it is free from restricted hazardous substances. The product meets general industry fastening requirements for plastic fastener applications where electrical isolation, chemical resistance, and lightweight properties are critical.