Acme lead screw assemblies are the preferred choice of many when it comes to linear motion applications, partially because they’re very flexible, coming in “many flavors” so to speak. One example of this is simply how many material combinations are available between the screw and the nut. To name a few, nuts are available in Delrin (acetal), PEEK (polyether ether ketone), PET-P (polyethylene terephthalate), PAI (polyamide-imide), bronze, steel, and stainless steel. Helix also makes screws in a variety of alloy and stainless steels as well. Combined with our array of nut materials that means we can deliver a combination just right for your application. To further fine tune performance, screws can also have different coatings such as black oxide or PTFE.