Stainless Steel SS304 SS316 Ss410 DIN 7504 Hex Flange Head Roofing Screw Bi-Metal Screw Self Drilling Screw

Product Description

Stainless Steel SS304 SS316 SS410 DIN 7504 Hex Flange Head Roofing Screw Bi-Metal Screw Self Drilling Screw
Product Description Self-drilling screws are usually classified as self-tapping screws and are often called drill tail screws or self-tapping and self-drilling screws in daily life. Their tails are like drill bits and can drill holes by themselves. They can directly penetrate into the connected materials without the need for pre-drilling, thus greatly saving construction time.

Materials
Carbon steel: Commonly used, with a surface hardness of HV560 - 750 and a core hardness of HV240 - 450 after standard heat treatment. However, it is prone to rusting with ordinary surface treatments2. Stainless steel: Self-drilling screws made of stainless steel have excellent anti-corrosion properties. For example, those made of 304 stainless steel have strong rust prevention capabilities, but they cannot be heat treated, have relatively low hardness, and higher costs. They are often used in environments with high requirements for corrosion resistan
Types
Head Shapes: Commonly seen head shapes include countersunk head with cross slot, pan head with cross slot, pan head with Phillips slot, slotted pan head, slotted countersunk head, hexagon head with washer face, etc Slot Types: There are multiple options such as cross slot, slotted, and Phillips slot.
Product Parameters

Diameter	Self-tapping screws have a variety of diameter specifications. Commonly seen ones include M1.0, M1.2, M1.4, M1.6, M2.0, M2.5, M3.0, M3.5, M4.0, M5.0, M6.0, etc.
Length	The length range is usually from 1.5 mm to 100 mm, such as 3 mm, 5 mm, 8 mm, 10 mm, 12 mm, 16 mm, 20 mm, 25 mm, 30 mm, 40 mm, 50 mm, etc.
Thread Parameters	They can be divided into coarse threads and fine threads. Coarse threads have a larger pitch, enabling faster penetration but relatively lower fastening force. Fine threads have a smaller pitch, are more difficult to penetrate but can provide greater fastening force, suitable for occasions where higher connection strength is required.
Surface Treatments	Galvanizing Nickel plating Chromium plating Phosphating

Product Advantages Self-Drilling Function: It can drill holes by itself, saving construction time and improving work efficiency. Powerful Fastening Force: It can provide reliable fastening to ensure the stability of the connection. Wide Range of Applicable Materials: It can be used for various materials such as metal, wood, and plastic. Multiple Head Shapes and Slot Types: Different head shapes and slot types are available to meet different usage requirements and aesthetic needs. Diverse Surface Treatments: Different surface treatments can be selected according to different usage environments to improve the anti-corrosion and wear resistance of the screws.
Application Construction Industry Decoration Furniture Manufacturing Automobile Industry Electronic Equipment

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