S-98885A124 1/4"-20 x 1/2" ASME B18.3, UL 94 V-0 Plastic Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional high-temperature performance maintains structural integrity from -50° to 500°F, ideal for thermal cycling environments
• Superior chemical resistance thanks to PEEK plastic construction, preventing corrosion in harsh industrial settings
• Reliable mechanical strength with 25,000 psi tensile capacity for demanding assembly applications
• Precision Class 2A thread fit ensures consistent engagement and vibration resistance in UNC coarse threading
• Standard hex drive compatibility with 3/16" drive size for easy installation using common tools
• Comprehensive regulatory compliance including UL 94 V-0 flammability rating and environmental standards
• Fully threaded design provides maximum grip length and uniform load distribution

Professional Applications & Engineering Value

Engineered for extreme environment applications, these PEEK plastic socket head cap screws deliver critical performance where metal fasteners fail. The beige PEEK material offers outstanding chemical resistance against aggressive solvents, fuels, and acids while maintaining dimensional stability across wide temperature fluctuations. The 1/4"-20 UNC coarse thread with Class 2A fit provides reliable engagement in plastic and soft metal substrates, reducing stripping risks. Socket head design with hex drive ensures secure installation in confined spaces, making these fasteners ideal for semiconductor equipment, chemical processing systems, medical devices, and aerospace components where non-conductive, non-magnetic properties are essential.

Specification Summary & Compliance

This 1/4"-20 UNC thread screw features Class 2A thread tolerance for precision fit and follows ASME B18.3 specifications for socket head cap screws. The fastener is fully threaded with right-hand direction and measures 1/2" in length. Compliance includes UL 94 V-0 flammability rating for fire safety, RoHS 3 (2015/863/EU) compliance for hazardous substance restriction, and REACH (EC 1907/2006) compliance for chemical safety regulations.