Galvanized Hexagonal Drilling Self-Tapping Screws Self-Drilling Dovetail Screws

• Customization: Available
• Material: Carbon Steel
• Type: Hexagon Head
• Groove: Cross
• Connection: Common Bolt
• Head Style: Hexagonal
• Standard: DIN
• Grade: 4.8
• Use: Standard
• Whether to Support Customization: Support
• Surface Treatment: Galvanizing
• Applicable Industries: Construction Industry
• Transport Package: Container
• Specification: 1-100
• Trademark: Huilin
• Origin: Handan, Hebei
• HS Code: 0101101010
• Production Capacity: 50000

Product Description

The following is a description of the hexagonal drill tail wire:

Appearance structure

Head: It is hexagonal in shape, similar to ordinary hexagonal bolts, making it easy to use tools such as wrenches for operation, providing good torque transmission ability, and facilitating fastening.

Screw rod: usually a hollow rod with serrated threads on the surface, which can better engage with the material and prevent loosening. The tail is in the shape of drill tail or pointed tail, similar to the pointed part of Fried Dough Twists drill, which can directly drill and tap on materials.
Specification and size

• Diameter: The common diameter range is generally between 2.9 millimeters and 6.3 millimeters, such as 2.9 millimeters, 3.5 millimeters, 3.9 millimeters, 4.2 millimeters, 4.8 millimeters, 5.5 millimeters, 6.3 millimeters, etc.

• Length: There are various length specifications, usually ranging from 20mm to 300mm. The specific length depends on actual needs, such as 20mm, 25mm, 30mm, 40mm, 55mm, 70mm, 125mm, 300mm, etc.

Material characteristics

Carbon steel: such as 1022A carbon steel, after heat treatment, the surface hardness is HV560-750, and the core hardness is HV240-450. It has high hardness and low price, but ordinary surface treatment is prone to rusting.

Stainless iron: The material is 410 stainless iron, which can be heat treated and has better rust prevention ability than carbon steel, but worse than stainless steel.

Stainless steel: The common type is 304 stainless steel, which cannot be heat treated, has strong rust prevention ability, low hardness, and is relatively expensive. It can only be used to drill softer materials such as aluminum, wood, and rubber plates.

Composite material: The drill bit is made of carbon steel, and the threads and head are combined with 304 stainless steel, combining the advantages of both.

Functional advantages

Efficient and convenient: No need for pre drilling, drilling, tapping, and locking can be directly done on the materials and base materials, greatly saving construction time.

• Secure connection: The serrated thread design provides a higher degree of engagement between the hexagonal drill tail wire and the workpiece, with strong tensile and maintenance forces. After combination, it will not loosen for a long time, effectively preventing the connection from loosening or falling off.

Widely applicable: Suitable for fastening connections of various materials such as wood, plastic, steel, color steel plates, etc., it has a wide range of applications in various fields such as construction, machinery, and automobiles.