Language

+86-13705735391

[email protected]

+86-13705735391

Home / Products / Screws / Self Drilling Screws / Hexagonal Flange Self Drilling Screw
Categories
Contact Us
  • Hexagonal Flange Self Drilling Screw
  • Hexagonal Flange Self Drilling Screw
  • Hexagonal Flange Self Drilling Screw
  • Hexagonal Flange Self Drilling Screw

Hexagonal Flange Self Drilling Screw

The Hexagonal Flange Self-Drilling Screw is a fastener featuring a hex flange head and a self-drilling point. The flange head design provides an increased bearing surface for stable clamping, while the hexagon allows for high-torque driving with wrenches or sockets. The drill point tip eliminates the need for pre-drilling by cutting its own hole during installation, combining drilling, tapping, and fastening into one operation. This screw is commonly used for connecting metal sheets and profiles. The specification is 1/4-14*70, where 1/4" is the nominal thread diameter, 14 indicates the number of threads per inch, and 70mm is the overall length. It is manufactured from 1022A carbon steel with a Dacromet surface treatment, a coating known for its corrosion-resistant properties. The single piece weight is 13.75 grams.

PREV：Cylindrical Head Inner Hexagon Self Drilling ScrewNEXT：Other Head Types
  • Product Features

  • Specification: 1/4-14*70

    Material: 1022A

    Surface Treatment: Dacromet

    Single weight：13.75

    Product Introduction

    The Hexagonal Flange Self-Drilling Screw is a heavy-duty fastener designed for metal-to-metal fastening applications requiring high torque transmission and secure clamping. The hexagonal flange head configuration features an integrated flange that eliminates the need for a separate washer, providing accurate load distribution across the bearing surface. The self-drilling point drills and taps threads simultaneously during installation, eliminating pilot hole requirements and reducing assembly time. Manufactured from C1022A carbon steel with Dacromet surface treatment, this screw offers corrosion resistance for outdoor and industrial applications. The 1/4-14 specification provides thread engagement for structural connections in construction, roofing, and heavy equipment assembly.

    Core Advantages

    01
    Hexagonal Flange Head
    Integrated flange eliminates the need for a separate washer and provides accurate load distribution across the bearing surface.
    02
    Self-Drilling Point
    Drills and taps threads in a single operation, eliminating pilot hole requirements and reducing installation time.
    03
    High Torque Transmission
    Hexagonal head design enables high torque application for secure fastening in structural connections.
    04
    Dacromet Coating
    Provides high corrosion resistance with extended salt spray protection for outdoor and industrial applications.
    05
    Heavy-Duty Material
    C1022A carbon steel grade offers strength for structural fastening applications.
    06
    Standard Specification
    1/4-14 thread configuration provides consistent performance for construction and heavy equipment assembly.

    Product Features

    Hexagonal flange head Integrated flange eliminates separate washer requirement, providing accurate load distribution and secure clamping force.
    Self-drilling point Drills and taps threads simultaneously, eliminating pilot hole drilling and reducing installation steps.
    C1022A carbon steel material Provides strength for heavy-duty fastening applications in structural and industrial settings.
    Dacromet surface treatment Offers corrosion resistance with salt spray protection suitable for outdoor and industrial environments.
    1/4-14 thread specification Standardized thread configuration ensures consistent performance and compatibility with industry-standard fastening systems.
    70mm length Extended length provides engagement for thicker material assemblies and structural connections.
    Single weight 13.75g Consistent weight specification for inventory management and quality control.

    Application Scenarios

    Steel structure construction
    Roofing systems
    Metal building assembly
    Heavy equipment manufacturing
    Structural steel connections
    Bridge and infrastructure
    Railway applications
    Industrial machinery assembly

    This hexagonal flange self-drilling screw is deployed in heavy-duty metal fastening applications requiring high torque transmission and corrosion resistance. Applications include steel structure construction where reliable connections are essential, roofing systems requiring weather-resistant fasteners, metal building assembly, heavy equipment manufacturing, structural steel connections in infrastructure projects, railway applications, and industrial machinery assembly where the 1/4-14 specification provides thread engagement for structural loads.

    Common Questions and Solutions

    What are the benefits of the hexagonal flange head design?
    The hexagonal flange head combines the torque transmission capability of a hex head with an integrated flange that acts as a built-in washer. This eliminates the need for separate washers, simplifies inventory, and provides accurate load distribution across the bearing surface for secure clamping.
    What torque can be applied to this screw?
    The hexagonal head design enables high torque application compared to other head types. Refer to the technical datasheet for recommended installation torque values based on material thickness and substrate hardness to ensure proper engagement without stripping or over-driving.
    What material thickness can the 1/4-14 screw accommodate?
    The 1/4-14 specification with 70mm length provides engagement for thicker material assemblies. The actual maximum material thickness depends on the drill point length and substrate hardness. Consult the technical datasheet for specific thickness recommendations.
    What is the Dacromet coating and what are its benefits?
    Dacromet is a water-based zinc flake coating that provides high corrosion resistance with extended salt spray protection. It offers an environmentally friendly alternative to conventional plating processes and is suitable for outdoor and industrial applications requiring long-term corrosion protection.
    Is this screw suitable for outdoor applications?
    Yes. The Dacromet surface treatment provides corrosion resistance for outdoor applications. The coating offers salt spray protection suitable for roofing, structural steel, and infrastructure applications exposed to weather conditions.
    What is the recommended installation speed for this screw?
    Install at controlled speeds to avoid overheating the drill point. Excessive speed may reduce drill point life and cause thread stripping. Use torque-controlled drivers to prevent over-tightening when the flange contacts the workpiece surface.

    Installation Considerations

    1
    Select drill point length appropriate for material thickness to ensure proper thread engagement and secure fastening.
    2
    Use torque-controlled installation tools to prevent over-driving. The hexagonal flange should seat against the workpiece surface without damaging the flange or surrounding material.
    3
    Apply appropriate spindle speed based on material hardness; excessive speed may reduce drill point life and cause thermal damage to the coating.
    4
    Ensure perpendicular alignment between screw axis and workpiece surface to prevent drill point deflection and ensure clean hole formation.
    5
    The Dacromet coating provides corrosion resistance. Handle screws with clean gloves to maintain coating integrity and prevent contamination that could affect corrosion performance.
    6
    For structural applications requiring specific torque or tension values, consult the technical datasheet for recommended installation parameters.

Related Products

Jiaxing Zhongke Metal Technology Co.,Ltd.
Jiaxing Zhongke Metal Technology Co.,Ltd. is located in Xinfeng Town Industrial Park, Nanhu District, Jiaxing City, Zhejiang Province. It is a manufacturer integrating the development, design and manufacturing of heat treatment equipment. At the same time, due to the advantages in the heat treatment industry, it also takes into account the development of general parts, automotive parts, and stainless steel high-strength fasteners. Design, development, and manufacturing, and open to the outside world for heat treatment process design and processing of various metal materials. As China Wholesale Hexagonal Flange Self Drilling Screw Suppliers, Exporter and Hexagonal Flange Self Drilling Screw Factory. The company has strong financial and technical strength, complete production equipment, scientific testing methods, and a perfect management team. "Quality-oriented, technological innovation" is our purpose, and adhering to the concept of "service first, honesty and trustworthiness", to provide customers with diversified and reliable products.
  • 2001

    Founded in

  • 17 acres+

    Covered area

  • 100+

    Manufacturing equipment

  • 200+

    Number of employees

News Center

Contact Us Now