S-93939A756 1/4"-20 x 3/8" Plastic Fillister Head Slotted Screws

Key Features & Benefits at a Glance

• Excellent corrosion resistance due to nylon plastic construction, eliminating rust and galvanic corrosion in sensitive environments.
• Superior electrical insulation properties for safe and reliable use in electrical assemblies and components.
• Wide operating temperature range from -40° to 185° F, ensuring performance stability in varied climatic and operational conditions.
• Lightweight design reduces overall assembly weight without compromising on fastener integrity.
• Precise Class 2A thread fit with 1/4-20 UNC coarse threading for easy, quick starts and reliable engagement in a wide range of materials.
• Durable fillister head with a slotted drive provides a high, narrow profile for deep counterbores and offers a simple, tool-friendly installation.
• Full compliance with RoHS 3 regulations, ensuring the screw is free from hazardous substances for use in regulated markets and applications.

Professional Applications & Engineering Value

This nylon plastic screw is engineered to solve critical challenges in electrical and lightweight assemblies. Its inherent non-conductive and non-magnetic properties prevent short circuits and interference, making it ideal for electronic enclosures, control panels, and communication devices. The rounded fillister head and slotted drive design allow for a low-profile, secure fit in deep counterbores, which is essential for compact designs. The 1/4-20 UNC coarse thread and Class 2A fit ensure rapid installation and high resistance to vibrational loosening in plastics and soft metals. Furthermore, its ability to perform across a broad temperature range from -40° to 185° F guarantees reliability in both indoor and outdoor applications, from consumer electronics to automotive components, where thermal expansion and environmental factors are a concern.

Specification Summary & Compliance

This screw adheres to Unified Coarse (UNC) thread standards with a precise Class 2A fit for consistent, reliable performance. Key dimensional specifications include a 1/4"-20 thread size, 3/8" length, 0.414" head diameter, and 0.237" head height with a high, narrow rounded profile. It is fully threaded with a right-hand thread direction. The product is manufactured to be fully RoHS 3 (2015/863/EU) Compliant, confirming it is free from restricted hazardous substances, making it suitable for use in regulated industries and global markets.