Frequently Asked Questions

The Duraclamp can be exposed to temperatures up to 275º Fahrenheit (135º Celsius) without any effect on its’ mechanical or physical properties. Clamps that are exposed to higher temperatures for long periods of time will begin to soften and lose their structural integrity.

Duraclamps are made from a high-tech, fiberglass filled, thermoplastic impervious to all anodizing and plating chemicals. Brite dip solutions can discolor the Duraclampbut will not effect its’ structural integrity or usefulness.

If the load is extremely heavy, utilize a rack with a horizontal cross piece supporting the load. The clamp can then be used to achieve a positive electrical connection.

Most definitely. The placement flexibility of the Duraclamp is one of its’ many strengths. However, care should be taken to insure that the frame and screw portions are properly aligned to avoid placing undue stresses on the Duraclamp

The Duraclamps are designed to be tightened to a torque of 50 to 60 inch pounds by hand or by our factory set Duralok™ torque wrenches only. This range is more than adequate to secure extrusions, sheets and brake metals.

No. The Duraclamp is electrically and chemically inert. It will not absorb or expel any chemicals or metals in your baths and wastestreams and it will not thieve any electricity from the finishing process.

There are many factors that must be considered when determining the right Duraclamp for your facility:

  1. Size and shape of piece to be finished.

  2. Size of your finishing baths.

  3. Size of your standard spline bar.

  4. Customer requirements regarding rack marks.

We recommend that you refer to the links on “Duraclamp Specifications” and “Special Feature Guide” to learn more about Duraclamp options.


Anodizers and platers order Duraclamps with alumina oxide tips for two primary reasons:

  1. The tips only make a “pinpoint” rack mark leaving more useable metal to satisfy production and/or customer demands.

  2. The tips tend to dig into the spline bar and the work piece therefore creating a more secure load.

Remember also that alumina oxide is actually a “diamond hard” ceramic material. It is uniquely suited for “2-Step” anodizers that cannot utilize titanium tips because of the halo mark they leave on the work piece at the contact point.