The Bradley Group of Companies

The IFI (Industrial Fastener Institute) has testing standards for ENGLISH and Metric external AND INTERNAL thread LOCKING. For more information, see Industry Spec’s on our web site and view IFI: IFI-124, IFI-524, IFI-524, IFI-525, and IFI-155, IFI-160, IFI-555, and IFI-560.