VISUAL INDICATOR BOLTS

Heavy Hex

Genuine Product AS9120B Certified Fast Delivery

SmartBolts Heavy Hex are advanced fastening solutions designed with an integrated visual tension indication system that enables users to monitor bolt tension in real time. These bolts provide a clear visual indication of proper tightening, helping reduce the risk of over-tightening or under-tightening in critical applications. Heavy Hex SmartBolts are custom-engineered for demanding industrial environments where high-strength and reliable bolted connections are required.


  • Minimum Diameter: 1/2" (M12)
  • Maximum Diameter: 2.5" (M64)
  • Minimum Length: 1.25" / 30 mm
  • Maximum Length: 24" / 600 mm
  • Product Category Options: Custom
  • Design Tension Set Point Range: 30%–90% of Fastener Proof Load
  • Accuracy: ±10%
  • Operating Temperature Range: -4°F to 168°F (-20°C to 75°C)


  • Heavy industrial machinery
  • Mining and construction equipment
  • Structural fastening applications
  • Hydraulic equipment and systems
  • Aerospace and defense applications
  • Manufacturing and OEM machinery
  • Critical bolted joint assemblies


Need help choosing the right product?

Our technical team is ready to assist with product selection and quotes.

Home Products Quote Contact WhatsApp