The Smart Stud

The Smart Stud is a three (3) piece fastener that will directly replace any helically threaded bolt.

A Smart Stud has a washer that rotationally interlocks with the stud and makes external reaction point free bolt tensioning possible.

Smart Studs provide extremely accurate bolt loading because all frictional forces are integral to the controlled Smart Stud surfaces.

The Smart Stud is a variation of the award winning Clamp mechanical tension nut.

The Smart Stud is engineered and manufactured to meet a specific application requirement. 

The detail below shows the components of the Smart Stud.

is the “inner sleeve” and the top part of the bolt. is the outer sleeve that threads to the inner sleeve/bolt. is the hardened washer that attaches to the inner sleeve/bolt via a spline. is the bolt. is the thread portion of the bolt that is screwed into and attached to the application.

The Smart Stud simply threads into the housing or framework of the application. To ensure a smooth installation and to detect any possible conflict in the bolt hole… it is run down by hand (using a power drill etc… is not recommended) and seats itself against the application.

Typically the Smart Stud is used on steel to steel applications and this all the pre-load that is required. The system it is now ready for the HYTORC machine. Simply set the pump pressure, place the machine, push a button and achieve load accurate tension in only seconds per bolt! Bolt load accuracy is guaranteed to an industry leading + 5%!

1. The inner sleeve/bolt is connected to and is held stationary by the HYTORC machine during operation.
2. The outer sleeve which turns on the washer face is connected to the inner sleeve/bolt by an acme thread (ASME/ANSI B1.5) providing a higher turning friction to the inner sleeve/bolt and washer than the outer sleeve.
3. When the action force of the HYTORC machine is applied to the outer sleeve and its opposite reaction force to the inner sleeve/bolt, the outer sleeve turns at a known coefficient of friction on precision machined surfaces.
4. This results in the inner sleeve/bolt rising in a torsion-free, pure axial motion with pre-calibrated tension being applied.
5. The hardened washer remains stationary during the entire operation eliminating facial galling.
6. 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! 
7. The Smart Stud is rated for temperatures up to 1,000°F (537°C)
8. The Smart Stud 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 
9. Install the Smart Stud, set the pump pressure, place the tool and simply push a button on the remote control to achieve unprecedented bolt load accuracy to a guaranteed + 5% in only seconds per bolt!

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

When proper installation and maintenance procedures are adhered to, the Smart Stud 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!