S-99477A280 8-32 x 5/8" Plastic Socket Head Screws

Key Features & Benefits at a Glance

• Corrosion-resistant polypropylene construction ensures reliable performance in humid or chemical environments without rust or degradation
• Precision Class 2A thread fit provides consistent engagement and vibration resistance in assembly applications
• Wide temperature tolerance (-20° to 210° F) maintains structural integrity across diverse operating conditions
• Hex socket drive design enables secure tool engagement and precise torque application during installation
• RoHS 3 & REACH compliance guarantees environmental safety and regulatory acceptance for global manufacturing
• Coarse UNC threading delivers faster installation and reduced cross-threading risk compared to fine-thread alternatives
• Fully threaded shank design maximizes grip length and load distribution across the entire fastener

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these polypropylene socket head cap screws solve critical challenges in electronics, food processing, and chemical equipment where metal fasteners would corrode or contaminate. The 8-32 UNC coarse thread configuration ensures rapid assembly in plastic-to-plastic or plastic-to-metal joints, while the standard socket head profile with 9/64" hex drive accommodates common tooling for maintenance accessibility. The off-white color provides visual contrast for quality control inspections, and the fully threaded design maintains consistent clamping force across the entire 5/8" length, preventing loosening in vibrating environments where plastic fasteners dampen resonance more effectively than metallic alternatives.

Specification Summary & Compliance

This socket head cap screw maintains Class 2A thread fit per UNC standards with 0.164" thread diameter and coarse thread spacing. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring hazardous substance restrictions are met. The right-hand thread direction and standard socket head profile conform to industrial fastener specifications for interchangeability.