Stainless Steel Cross Drill Tail Screw M4.2*13

The tip of the tail screw is specially designed to resemble a sharp drill bit. This unique design allows it to self drill and extrude matching threads on the connected substrate (usually a relatively thin metal plate or non-metal material), achieving rapid fastening. In automobile manufacturing, this feature makes it very suitable for the installation of interior parts, the fixing of wire harness buckles, the assembly of sound insulation pads, and the connection of some non load bearing exterior panels (such as some truck compartment panels, protective panels, etc.). It greatly simplifies the process flow, saves the steps of pre drilling, and significantly improves assembly efficiency, especially in workstations or modification and maintenance links with relatively low automation.
The material of "stainless steel" is another major core value. In damp and corrosive environments such as the lower part of the car chassis and the inner side of the wheel arches, which are prone to contact with water, salt, and snow melting agents, ordinary steel screws are prone to rusting. This not only affects their appearance, but also makes disassembly difficult or connection failure due to rusting. The excellent corrosion resistance provided by austenitic stainless steel (such as 304 or higher corrosion-resistant 316) ensures that these non critical but exposed connection points can remain intact for a long time, meeting the requirements of vehicle weather resistance and service life.

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