Self-drilling screws are a new invention in recent years. Screw is a general term for fasteners, a common colloquialism.
The tail of a self-drilling screw is shaped like a drill tail or a pointed tail, which requires no auxiliary processing. It can be directly drilled, tapped, and locked onto the setting material or base material, significantly saving construction time. Compared to ordinary screws, it has higher tensile and holding strength, and will not loosen even after prolonged use. It is safe to use and allows for one-time completion of drilling and tapping, making the operation simple.
Purpose: It is a type of screw, primarily used for securing color steel tiles in steel structures and also for securing thin plates in simple buildings. It cannot be used for metal-to-metal fastening.
Self-drilling screw material and model
The materials include iron and stainless steel, with stainless steel further divided into various types of materials.
The models available are: Φ4.2/ Φ4.8/ Φ5.5/ Φ6.3mm, and the specific length can be negotiated according to requirements.
Based on different drill tails, it can be further divided into:
Round head rice grain/cross/club, countersunk head (flat head)/rice grain/cross/club, hexagonal washer, round head washer (large flat head), trumpet head, etc.
