S-93140A846 1/4"-20 x 1" ASME B18.6.3 Plastic Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Excellent visibility and chemical resistance with clear polycarbonate construction, ideal for applications requiring visual inspection or exposure to harsh environments
• Reliable thread engagement and easy assembly thanks to the Class 2A thread fit and coarse UNC thread spacing, reducing the risk of cross-threading
• Secure, flush mounting in tapered holes enabled by the standard 82° countersink angle and flat head design for a smooth, professional finish
• Broad thermal performance with a temperature range from -40° to 210° F, suitable for various indoor and outdoor industrial settings
• Full-length threading for maximum grip ensures consistent holding power along the entire 1-inch length of the screw
• Compliance with major industry and environmental standards including ASME B18.6.3, RoHS 3, and REACH, ensuring product safety and regulatory acceptance
• Simple installation and removal with a standard slotted drive, compatible with common hand tools for straightforward maintenance

Professional Applications & Engineering Value

This 1/4-20 UNC flat head slotted screw is engineered from clear polycarbonate plastic to address critical needs in industrial plastic fastening. Its material offers inherent impact resistance and electrical insulation, making it perfect for electronics enclosures, machinery guards, and display assemblies where visibility of internal components is necessary. The fully threaded design and Class 2A thread fit provide superior pull-out strength and vibration resistance in plastic or soft material applications, preventing loosening over time. The 82° countersink angle ensures a seamless fit in standard tapered holes, eliminating protrusions that could snag or cause injury. Ideal for use in high-temperature environments up to 210°F, these screws maintain integrity in demanding conditions without corroding, offering a durable, non-conductive alternative to metal fasteners.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC thread with coarse spacing and Class 2A thread fit for consistent dimensional accuracy. It is manufactured in accordance with ASME B18.6.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free from hazardous substances and safe for various industrial applications.