S-92929A218 1/4"-20 x 3/8" ASME B18.6.3 Plastic Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Excellent corrosion resistance due to nylon plastic construction, ideal for harsh or moisture-rich environments without risk of rust.
• Secure and reliable fastening with UNC coarse threading and Class 2A thread fit, ensuring easy installation and vibration resistance.
• Flush surface mounting enabled by the standard flat head and 82° countersink angle, preventing snagging and providing a smooth finish.
• Wide operational temperature tolerance from -40°F to 185°F, maintaining performance in varied thermal conditions.
• Full compliance with industry standards including ASME B18.6.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.
• Electrical insulation properties of nylon plastic, making it safe for use in electrical assemblies and components.
• Durable and lightweight design for reduced component weight without sacrificing strength in non-structural applications.

Professional Applications & Engineering Value

This nylon plastic flat head screw with UNC coarse threading and Class 2A thread fit is engineered to address common industrial challenges such as corrosion, electrical conductivity, and weight reduction. The non-conductive and chemically inert nylon material eliminates galvanic corrosion risks, making it perfect for electrical enclosures, control panels, and marine equipment. Its 82° countersink angle and slotted drive allow for easy, flush installation in plastics and soft metals, reducing assembly time and improving aesthetics. With a temperature range of -40°F to 185°F, it performs reliably in outdoor and variable climate applications, offering a durable, lightweight alternative to metal fasteners where strength-to-weight ratio and insulation are critical.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy and easy engagement. It is fully threaded for consistent holding power and complies with ASME B18.6.3 specifications for dimensional standards. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free from hazardous substances and safe for various industrial and consumer applications.