Tips on screw thread shapes – 99% of people don’t know!
screwThere are many kinds of eclectic products in the industry, including standard screws and non-standard screws, to name a few. Many customers say they do not know the specific product requirements when purchasing screw fasteners. Some only know the product name, some inquire directly through taking photos, and some confirm by sending samples, but you don’t know It is extremely inconvenient to have standard numbers and no detailed drawings. On the one hand, it takes time to determine the specific product, which will extend the delivery time of the entire product; on the other hand, repeated confirmation is required to ensure the accuracy of the data. Therefore, it is still very necessary to understand some simple fastener knowledge for the purchase of fasteners. Here is an introductionScrew tooth typevarieties and their respective characteristics.
Common tooth types include: A-shaped teeth, AB teeth, T-shaped teeth, double teeth, bundled teeth, concave and convex teeth, and triangular teeth.
How to identify the type of screw, specifically how to identify the type of screw from the actual product of the screw, such as PB, KB, PA, PWB, etc. Generally speaking, the teeth such as M3 or M5 are all metric, are they coarse or fine?
The threads of screws are commonly divided into machine threads, also called machine thread threads or machine threads, self-tapping threads, wooden threads, iron thread threads, which are divided from the tooth shape of the screws; and also from the applicable standards of different countries: such as British-made machine threads, American-made machine threads, British-made self-tapping threads, American-made self-tapping threads, etc.M3Maybe the teeth of M5 are all metric. Generally, you need to know what type of tooth it is, such as machine teeth, self-tapping teeth, etc. If it is machine teeth, the tooth pitch is generally the standard tooth pitch, that is, the coarse tooth. The coarse tooth of the metric screw is the standard tooth pitch, such asM3The standard tooth pitch of machine teeth is 0.5mm. The metric tooth pitch refers to the distance between two adjacent tooth peaks. It is commonly used.Standard ribbingThere are standard coarse teeth and standard fine teeth.
