HNBC Top Collar Hydraulic Nut HNTC Hydraulic Nuts are used in direct replacement of the existing conventional nut. They allow accurate loading of the bolt, and the load is then permanently retained by means of a load locking collar. This product is currently out of stock and unavailable. SKU: TF-hnbc-top-collar-hydraulic-nut Category: Tensioners Tag: TensionPro Related products TensionersDelta Series Tensioners Sonar MeasurementSonar Ultrasonic TOF Measurement TensionersHTR Spring Return Tensioners TensionersSUB Range Drilled Hex Nuts