February 22, 2025

How to choose the right screw thread tap?

Whether it is in life or work, the installation of wire thread inserts or the installation of self-tapping screws will encounter a variety of taps do not know how to choose the situation, or that the wrong tap to cause damage to the screw sleeve, Xinxiang Anderson Brothers Machinery & Equipment, as a professional manufacturer, will come to share with you how to choose the right screw tap?
1. Straight groove taps are very versatile, through holes or blind holes, non-ferrous metals or ferrous metals can be used, the price is cheap, but the quality is poor.
2. Spiral groove taps are more suitable for machining blind hole threads, and the chips are discharged backwards during processing. When processing ferrous metals, the spiral angle is chosen to be a little smaller, about 30 degrees generally, and the strength of the spiral teeth can be guaranteed. When processing non-ferrous metals, the helix angle is chosen to be a little less, usually about 45 degrees, so that cutting can be sharper.
3, extrusion tap more suitable for processing non-ferrous metals, especially aluminum alloy castings, it is the main metal extrusion, deformation, forming the internal thread. Extrusion molding is non-cutting. The tapped holes produced by the extrusion molding process have high tensile and shear strength, and the roughness of the processing surface is also good. However, the extrusion tap bottom hole has a high requirement, too large, and insufficient strength. ; too small can easily cause the tap to break.
4, screw-tip cone is more suitable for processing through-hole thread, machining forward discharge. The solid core has a large size, a good strength, and a large cutting force, so it has a good effect on the processing of non-ferrous metals, stainless steel, and ferrous metals.

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