S-99477A650 1/4"-20 x 1 1/4" Plastic Socket Head Screws

Key Features & Benefits at a Glance

• Superior chemical resistance thanks to durable Polypropylene Plastic construction, ideal for harsh industrial environments
• Broad temperature tolerance from -20° to 210° F, ensuring reliable performance in varied operating conditions
• Precise Class 2A thread fit for smooth assembly and secure fastening in UNC coarse thread applications
• Corrosion-free performance in environments where metal fasteners would degrade, reducing maintenance needs
• Efficient 3/16" hex drive design allows for easy installation with standard tools, speeding up assembly processes
• Fully threaded 1 1/4" length provides maximum grip and adjustment flexibility in plastic assemblies
• Environmental compliance with RoHS 3 and REACH standards, meeting strict regulatory requirements for hazardous substances

Professional Applications & Engineering Value

Engineered for demanding applications where metal fasteners fail, these Polypropylene Plastic socket head cap screws deliver exceptional value in chemical processing, food equipment, and electrical enclosures. The 1/4"-20 UNC coarse thread and Class 2A thread fit ensure vibration-resistant connections that maintain integrity under thermal cycling from -20° to 210° F. Unlike metallic alternatives, these off-white plastic fasteners eliminate galvanic corrosion risks when mating with dissimilar materials, while the 3/16" hex drive socket head design provides reliable torque transmission without stripping. Ideal for OEM assemblies requiring lightweight, non-conductive components with full RoHS 3 and REACH compliance.

Specification Summary & Compliance

This socket head cap screw features precise Class 2A thread fit per UNC standards with 1/4"-20 coarse threads and right-hand thread direction. The fully threaded design maintains consistent engagement across the 1 1/4" length, while the standard socket head profile accommodates 3/16" hex drive tools. Manufacturing complies with environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards for hazardous substance restrictions.