Marlin Steel manufactures Metal Fabrication products.
Chips are not produced
Greater strain resistance because the thread surface hardens during forming
Accurate thread dimensions
Precision: formed threads are never made too large, preliminary width of the first tap hit is avoided
CNC Sheet metal punching is high quality and fast
Chips are produced by thread cutting; tapping produces a thread in a form (extrusion). In this metal fabrication process,
material is displaced (moved, not cut) during the metal forming process. Tap teeth tips are pressed into a bore or a pre-punched tap hole.
Displaced material is squeezed into the gaps of the tool thread, forming the core diameter of the formed thread.
Material is subjected to the cold strain hardening during displacement.
All Marlin Steel taps are TiN coated to guarantee fast/safe punching. The standard tolerance for taps is 6HX.
X means an additional voluntary limitation of valid tolerance zone. Taps in the tolerance classes 6E, 6G, and 7G can be ordered if needed for your project.
This produces a slightly bigger thread than the standard tolerance 6H and is used when sheets are to be treated after forming the tap (e.g. coating).
After treatment, an accurate thread is guaranteed.
