Hex Screw, Tek Screw, Hex Washer Self Drilling Screw, Hex Flange Head Bi-Metal Screw

• Customization: Available
• Material: Carbon Steel
• Type: Hexagon Head
• Model NO.: BD-SD-HEX-M6-25mm-Zn, BMSC-HEX-DW-20mm
• Groove: Hexagon
• Connection: Common Bolt
• Head Style: Hexagonal
• Standard: As2331.3.1
• Grade: 10.9
• Sst Hour: 1000h/1500h
• Customized: OEM
• Thread: Full Thread/ Double Thread
• Lead Time: 30 Days
• Application: Metal Plates, Steel Plates, Sandwich Panels
• Surface Treatment: Ruspert Coating
• Core Hardness: 800-1200 MPa
• Surface Hardness: 600-1000 MPa
• Transport Package: Box Packaging/Bag Packaging
• Specification: M6, M8, M10/0mm, 25mm, 30mm, 40mm
• Origin: China
• HS Code: 7318140090
• Production Capacity: 80000ton/Year

Product Description

Product Description

 

Material:
Screw Material: Bi-metal (e.g., Carbon Steel + Stainless Steel or Alloy Steel)
Washer Material: Aluminum Composite Washer (Optional)

Dimensions:
Screw Diameter: M6, M8, M10, etc.
Screw Length: 20mm, 25mm, 30mm, 40mm, etc.
Thread Type: Double Thread / Single Thread
Head Type: Hex Flange Head / Round Head, etc.
Drilling Tail Length: Suitable for steel plate thickness from 0.8mm to 6mm

Surface Treatment:
Galvanized
Ruspert Coating 
 

Mechanical Properties
Tensile Strength:	800-1200 MPa
Shear Strength:	600-1000 MPa
Hardness:	Core Hardness: HRC 30-45 Surface Hardness: HRC 45-55

Applications:
Used for fastening metal sheets, steel plates, sandwich panels, and other construction materials
Suitable for metal roofing, walls, and industrial equipment installation
Widely used in construction, automotive, energy, and other industries

Features:
Self-drilling design, easy installation, no pre-drilling required
High corrosion resistance, suitable for outdoor or harsh environments
High tensile strength and shear strength, ensuring long-term stability
Excellent drilling capacity, suitable for various thicknesses of metal sheets