FULLERKREG® DTI Certifications: ASTM F959, RCSC, AASHTO, FHWA, and GL — Full Compliance for Global Structural Projects
- ASTM F959 / F959M — Compliant with the American Society for Testing and Materials (ASTM) specification for compressible-washer-type direct tension indicators for structural assemblies.
- RCSC — Compliant with the Research Council on Structural Connections (RCSC) specifications for pre-installation verification testing of high-strength bolt assemblies with direct tension indicator washers.
- AASHTO — Compliant with the American Association of State Highway and Transportation Officials specifications for the installation and testing of compressible-washer-type direct tension indicators for structural assemblies.
- FHWA / U.S. DOT — Over one-third of state DOTs have adopted FULLERKREG® Direct Tension Indicators as the preferred method for bolt pre-tensioning in bridge construction.
- GL (Germanischer Lloyd) Certification — For M36, M42, and M48 wind turbine tower flange connections, certified capable of achieving target preload accuracy within ±10%.
Source and specify FULLERKREG® certified DTI Squirtern Washers for your next project: FULLERKREG® ASTM F959 DTI Squirtern Washers.