Got a part number? Use our easy Part Finder to search our online catalog for select Assembly Technologies, Dodge®, Heli-Coil®, POP®, Tucker®, and SPR products, as well as our fasteners for plastic applications.

In thread milling, the workpiece remains stationary while the thread mill rotates at high speed and moves along a helical path. The tool is moved into position above the hole and then lowered into the hole before beginning the cut. The tool then moves out radially to touch the wall of the workpiece and begins its helical climb back out of the hole, controlled by a CNC program. Chip load and wear on the tool can be controlled by making several passes to generate the full thread profile. Thread milling speeds and feeds are dependent upon material tensile strength, hardness, and elongation characteristics. Spiralock® can assist customers in choosing a thread mill and recommending speeds, feeds, and number of passes.

Tapping may be the most common method for putting threads into a hole, but it is not always the best method. Difficult-to-cut materials, small hole sizes, or threading close to the bottom of a blind hole can push the limits of tap capabilities. An alternative way to create threads and overcome these hurdles is through the use of a thread milling cutter. Spiralock® all-carbide thread milling cutters can be made to order to suit specific customer applications by adjusting the cutter diameter, neck length, and number of threads.

The availability of the products described on this site, and the product descriptions, may vary from country to country. Consult your STANLEY® Engineered Fastening Account Executive or your local distributor for specific product information.

Stay current on newsworthy trends, thought leadership, product releases, events, and more by signing up to receive our direct communications customized by industry.