S-91345A703 3/8"-16 x 2" Fiberglass Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with fiberglass construction, ideal for harsh chemical and moisture-rich environments
• Excellent thermal stability maintaining performance across a wide -60° to 190°F temperature range
• Enhanced load distribution through the integrated 51/64" flange, reducing surface pressure and material stress
• Quick installation and removal with external hex drive design, compatible with standard wrench tools
• Reliable thread engagement with Class 2A UNC coarse threads ensuring secure fastening in various materials
• Environmental compliance assurance meeting RoHS 3 standards for restricted substance control
• Optimized weight-to-strength ratio using lightweight fiberglass while maintaining structural integrity

Professional Applications & Engineering Value

This fiberglass flanged hex head screw delivers exceptional performance in demanding industrial applications where corrosion resistance and electrical insulation are critical. The gray fiberglass construction prevents galvanic corrosion when joining dissimilar metals, while the UNC coarse thread design provides superior holding power in soft materials and plastics. The partial threading allows for precise clamp load control, making it ideal for electrical enclosures, chemical processing equipment, and marine applications. The external hex drive ensures high torque capability without stripping, and the integrated flange eliminates the need for separate washers, streamlining assembly processes in high-temperature environments up to 190°F.

Specification Summary & Compliance

This 3/8"-16 UNC hex head screw features precise Class 2A thread fit tolerances according to Unified National Coarse standards, with right-hand threading and 1½" minimum thread length. The fastener is manufactured to comply with RoHS 3 (2015/863/EU) regulations, ensuring environmental safety and restricted substance compliance. The partially threaded design and 2" overall length provide consistent performance across industrial applications requiring reliable fiberglass fasteners with external hex drive compatibility.