Stanley St\St Open Rivnut Large Head (Part No. N24M06CO21) is engineered for reliable performance in professional fastening, access hardware and assembly applications. Its listed specification includes M6 Grip 3.0-5.5, Hole 9mm. This rivetnut is designed to create a strong, reusable internal thread in thin sheet or other materials where conventional tapping may not be practical. As part of the Stanley product range, it reflects the brand's established focus on consistent quality and application-led engineering. It supports efficient installation and reliable fastening in fabricated panels, enclosures and general engineering assemblies.