S-99091A540 1/4"-20 x 3/4" Plastic Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance ensures long-lasting performance in harsh environments without rust or degradation.
• Excellent electrical insulation properties prevent electrical conductivity, making them ideal for sensitive electronic assemblies.
• Lightweight and durable nylon construction reduces overall weight while maintaining strength for repeated use.
• Wide operating temperature range from -40°F to 185°F allows reliable performance in varying thermal conditions.
• Easy installation with external hex drive provides secure gripping for efficient tightening using standard tools.
• Precise UNC coarse threading with Class 2A fit ensures consistent, reliable engagement and reduces cross-threading risks.
• RoHS 3 compliance guarantees environmental safety and meets stringent regulatory standards for industrial use.

Professional Applications & Engineering Value

Engineered for demanding industrial and electronic applications, these nylon hex head screws address critical challenges like corrosion and electrical interference. The black nylon plastic material inherently resists moisture, chemicals, and UV exposure, eliminating the need for additional coatings. With UNC coarse threads and a Class 2A fit, they provide quick assembly and secure fastening in plastics, composites, or metal panels, reducing installation time. The external hex drive allows high torque application without stripping, while the non-conductive properties prevent short circuits in electrical enclosures, control panels, and PCB mounts. Ideal for corrosion-resistant setups in marine, automotive, and outdoor equipment, these screws deliver reliability where metal fasteners fail.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It features a 1/4"-20 coarse thread, 3/4" length, and fully threaded design for maximum holding power. Manufactured in compliance with RoHS 3 (2015/863/EU), it meets environmental regulations, ensuring safe use in global markets. The product operates within a temperature range of -40°F to 185°F, suitable for diverse industrial conditions without performance loss.