Clamp Mechanical Tension Nut

The Clamp is a three (3) piece fastener that will directly replace any type of helical nut.

The Clamp’s interlocking surfaces provide pure axial bolt tensioning without the need for an external reaction point.

The Clamp provides extremely accurate bolt loading as all frictional forces are integral to the controlled Clamp’s surfaces!

The diagrams show the components and mechanics of the Clamp.
is the inner sleeve that threads to the stud.   is the outer sleeve that threads to the inner sleeve.   is the hardened washer that attaches to the inner sleeve via a spline.

The turbine style Clamp mechanical tension nut is used in conjunction with the AVANTI or the AVANT-DR machine.

• The inner sleeve is connected to the bolt end and is held stationary by the HYTORC machine during operation.
• The outer sleeve which turns on the washer face is connected to the inner sleeve by an acme thread (ASME/ANSI B1.5) providing a higher turning friction to the inner sleeve and washer than the outer sleeve.
• When the action force of the HYTORC machine is applied to the outer sleeve and its opposite reaction force to the inner sleeve, the outer sleeve turns at a known coefficient of friction on precision machined surfaces.
• This results in the inner sleeve (and the bolt) rising in a torsion-free, pure axial motion applying pre-calibrated tension to the bolt.
• The hardened washer remains stationary during the entire operation eliminating facial galling.
• Pure, mechanical bolt tension is provided hands free (even on inverted applications) without the use of bridges, pullers or jack screws and without relying on bolt relaxation to seat the nut!
• The Clamp is rated for temperatures up to 1,000°F (537°C)
• The Clamp is available for any bolt size (imperial/metric), any thread configuration and upon request, is available in specialty materials to suite the application and environmental conditions 
• Install the Clamp, set the pump pressure, place the tool and simply push a button on the remote control to achieve unprecedented bolt load accuracy to + 5%... guaranteed!

The Clamp is a perfect solution for limited radius applications.

Applications set into a pocket or a counter bore situation pose a problem with conventional tooling. Standard drive extensions and machined down sockets
required for such applications are prone to failure… compromising the safety of the operator!

The design and the mechanics of the Clamp allow dedicated drive extensions to be used to engage onto the Clamp directly while positioning the HYTORC machine away from the conflict area!

Custom covers are available in a number of styles for the Clamp.

The covers keep the Clamp free of contaminants and build up ensures easy installation of the HYTORC machine during disassembly!

The Clamp is available in a low clearance (LC) version for applications with restricted headroom or long stud protrusion.

The mechanics and operation are the same as the turbine style but the STEALTH low profile machine is used.

When proper installation and maintenance procedures are adhered to, the Clamp can be re-used for years of trouble free service.

A HYTORC technician will work with your team during the original installation and first disassembly periods to provide thorough training on: installation, operation, disassembly, maintenance and re-installation procedures to ensure complete satisfaction with system!

The Clamp is a precision bolting system engineered to not only meet… but surpass your stringent Safety, Quality & Schedule demands!

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