S-91345A680 1/4"-20 x 1/2" Fiberglass Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to high-quality fiberglass construction, ideal for harsh industrial environments
• Excellent thermal stability with a wide operating range from -60° to 190°F, ensuring reliable performance in temperature-sensitive applications
• Enhanced assembly efficiency with external hex drive and flanged head design for secure, tool-friendly installation
• Precise thread engagement with Class 2A UNC coarse threads providing consistent fit and vibration resistance
• Full threading capability offering maximum grip and load distribution along the entire 1/2" length
• RoHS 3 compliance ensuring environmental safety and regulatory adherence for global industrial use
• Durable flange design eliminating the need for separate washers and providing superior clamping force

Professional Applications & Engineering Value

This fiberglass hex head screw with 1/4-20 UNC coarse threading delivers exceptional engineering value in demanding applications where metal fasteners would fail. The fiberglass material provides inherent corrosion resistance, making it perfect for chemical processing, marine, and outdoor installations where moisture and corrosive elements are present. The flanged hex head design with external drive ensures quick installation and removal while distributing load effectively across surfaces. With thermal stability maintained from -60° to 190°F, this fully threaded fastener performs reliably in temperature-fluctuating environments like HVAC systems, electrical enclosures, and automotive components. The gray color offers aesthetic consistency while the Class 2A thread fit guarantees precise mating with standard nuts and threaded holes.

Specification Summary & Compliance

This hex head screw features precise 1/4-20 UNC coarse threads with Class 2A thread fit ensuring standard-compliant dimensional accuracy. The fastener maintains full threading along its 1/2" length with 3/8" head width and 9/16" flange diameter for optimal mechanical performance. Manufactured in compliance with RoHS 3 (2015/863/EU) regulations, this screw meets international environmental standards for hazardous substance restrictions, making it suitable for global industrial supply chains and environmentally conscious manufacturing operations.