China Cheap price Cross Recessed Screw - Heavy Duty Self Drilling Metal Screws – Chuanyi
China Cheap price Cross Recessed Screw - Heavy Duty Self Drilling Metal Screws – Chuanyi Detail:
Description
Self drilling screws made of hardened carbon steel or stainless steel are used for fastening . Classified by the pitch of thread, there are two common kinds of self drillingl screw threads: fine thread and coarse thread.
A self-drilling screw is a type of self-tapping screw that also features a drill point. The sharp drill point will both drill a hole and form the mating threads in a single operation, that can tap its own hole as it is driven into the material. More narrowly, self-tapping is used only to describe a specific type of thread-cutting screw intended to produce a thread in relatively soft material or sheet materials, excluding wood screws. Other specific types of self-tapping screw include self-drilling screws and thread rolling screw
Meanwhile, There are collated self drilling screws. They can be used on screw gun, which speeds up the installation.
Moreover, there are various coated self drilling screws which can protect against corrosion.
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By Eleanore from Turkey - 2018.09.16 11:31
The sales manager is very patient, we communicated about three days before we decided to cooperate, finally, we are very satisfied with this cooperation!
By Donna from Ethiopia - 2017.11.20 15:58
