S-91345A642 5/8"-11 x 2" Fiberglass Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from fiberglass material, ideal for harsh chemical and marine environments
• Exceptional thermal stability maintains performance across extreme temperatures from -60° to 190°F
• Maximum torque application enabled by external hex drive and 15/16" head width for secure fastening
• Reliable thread engagement with Class 2A coarse UNC threads ensuring consistent performance in vibration-prone applications
• Full threading coverage along the 2" length provides maximum grip strength and load distribution
• Environmental compliance with RoHS 3 standards for safe use in regulated industrial settings
• Easy identification with distinctive gray color coding for quick material recognition on job sites

Professional Applications & Engineering Value

This fiberglass hex head screw delivers critical performance advantages in demanding industrial applications where metal fasteners fail. The fiberglass construction provides inherent corrosion resistance, eliminating galvanic corrosion concerns in chemical processing, marine, and wastewater treatment facilities. The 5/8"-11 UNC coarse thread design ensures rapid installation and superior holding power in composite materials and soft substrates, while the external hex drive accommodates high-torque applications without stripping. With operational capability from -60° to 190°F, these screws maintain dimensional stability in temperature-cycling environments where thermal expansion would compromise metal fasteners, making them ideal for HVAC systems, electrical enclosures, and outdoor construction applications.

Specification Summary & Compliance

This 2" fully threaded hex head screw features 5/8"-11 UNC coarse threads with Class 2A thread fit per ASME B1.1 standards, ensuring precise dimensional accuracy and reliable mating with corresponding nuts and threaded holes. The 15/16" hex head width and 13/32" head height provide optimal wrench engagement surfaces. Manufactured from premium fiberglass material in gray coloration, the product is fully RoHS 3 (2015/863/EU) compliant for restricted substance management, meeting international environmental regulations for industrial components.