S-91345A692 1/4"-20 x 1 1/2" Fiberglass Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Corrosion-resistant fiberglass construction ensures long-lasting performance in harsh environments without rust or degradation
• Flanged hex head design eliminates the need for separate washers while providing superior load distribution and vibration resistance
• External hex drive system delivers maximum torque transmission for secure installations and easy removal with standard tools
• Class 2A thread fit with UNC coarse threading provides reliable engagement and faster assembly in various materials
• Wide temperature tolerance (-60° to 190°F) maintains structural integrity across extreme thermal conditions
• Full threading along the 1½" length offers consistent holding power throughout the entire fastener engagement
• RoHS 3 compliance guarantees environmental responsibility and regulatory acceptance for global applications

Professional Applications & Engineering Value

These fiberglass hex head screws address critical challenges in corrosive and electrically sensitive environments where metal fasteners fail. The gray fiberglass material provides inherent corrosion resistance while maintaining excellent strength-to-weight ratio, making them ideal for chemical processing equipment, marine applications, and electrical enclosures. The combination of UNC coarse threads and Class 2A fit ensures rapid installation in plastics, composites, and soft metals without stripping. The integrated flange design distributes clamping force effectively, preventing surface damage while the external hex drive accommodates high torque requirements for critical connections in high-temperature applications up to 190°F.

Specification Summary & Compliance

This 1/4"-20 UNC hex head screw features precise Class 2A thread fit per Unified Thread Standard specifications, ensuring consistent engagement and reliability. The fastener is fully threaded with coarse spacing and measures 1½" in length with 9/16" flange diameter. Manufacturing complies with RoHS 3 (2015/863/EU) regulations, guaranteeing restriction of hazardous substances for environmental safety and international market acceptance.