S-91345A644 5/8"-11 x 2 1/2" Fiberglass Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to durable fiberglass construction, ideal for harsh industrial environments
• Excellent temperature stability with reliable performance from -60°F to 190°F, maintaining integrity in extreme conditions
• Maximum torque application through external hex drive design, ensuring secure fastening and easy installation
• Enhanced thread engagement with fully threaded UNC coarse pattern, providing superior holding power in various materials
• Precise thread fit with Class 2A tolerance, ensuring consistent performance and easy assembly
• Environmental compliance with RoHS 3 standards, meeting strict regulatory requirements for hazardous substances
• Right-hand thread direction for standard installation procedures, compatible with common industrial equipment

Professional Applications & Engineering Value

These fiberglass hex head screws deliver exceptional value in demanding industrial applications where corrosion resistance and thermal stability are critical. The gray fiberglass material provides inherent resistance to chemical degradation and electrical insulation properties, making them ideal for electrical enclosures, chemical processing equipment, and marine applications. The 5/8"-11 UNC coarse thread design ensures rapid installation and superior pull-out resistance in composite materials and soft substrates. With fully threaded construction and external hex drive, these screws offer maximum clamping force distribution and high-torque capability, solving common challenges of fastener failure in high-vibration environments and temperature-fluctuating conditions.

Specification Summary & Compliance

This hex head screw features precise Class 2A thread fit according to UNC coarse thread standards, ensuring dimensional accuracy and reliable performance. The 0.625" thread diameter with 2-1/2" length provides consistent fastening capability across applications. Manufacturing complies with RoHS 3 (2015/863/EU) regulations, guaranteeing environmental safety and restriction of hazardous substances. The right-hand thread direction and coarse thread spacing maintain compatibility with standard industrial fastening systems and equipment.