High-Quality Galvanized Hexagon Bolts for Reliable Construction Use

• Customization: Available
• Material: Carbon Steel
• Type: Hexagon Head
• Model NO.: 1-1
• Connection: Common Bolt
• Head Style: Hexagonal
• Standard: DIN
• Grade: 4.8
• Surface Treatment: Galvanizing
• Thread Type: Full Thread
• Applicable Industries: Construction, Manufacturing
• After-Sales: Three Months
• Transport Package: Container Loading
• Specification: 1-30
• Trademark: Huilin
• Origin: Handan, Hebei
• HS Code: 0101101010
• Production Capacity: 50000

Product Description

External hexagonal wood screws are ingeniously crafted fasteners that blend the robust hexagonal heads with self-tapping or machine tooth threads, primarily engineered for wood and wood composite materials. These screws excel in creating robust and effective connections through tool-driven applications, boasting remarkable torque transmission capabilities alongside ideal compatibility with wood. Our in-depth analysis will unfold across four essential dimensions: structural characteristics, technical parameters, practical application scenarios, and selection criteria, offering a comprehensive understanding:

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1, Structure and Function Analysis

1. Head design

Hexagonal Drive: Adhering to the ISO 4032/GB 5648 standards, these screws are optimally compatible with standard sockets/wrenches for edge dimensions (e.g., M6 aligning with 10mm). This design ensures a superior torque transmission efficiency, notably outperforming cross grooves by offering a 30% increase in anti-slip force.

• Transition fillet: Featuring an R0.5-R1.0 fillet design at the junction of the head and rod, it effectively disperses stress to prevent splitting, enhancing durability.
2. Thread system

Self tapping thread:

• Sharp tip design: Designed with an 82° cone angle and a high-pitch of 3-5 teeth (like M6 × 1.0), these threads are formed by extruding wood fibers, eliminating the need for pre-drilling, particularly suitable for softer woods like pine (hardness ≤ HB60).

• Chip removal groove: Employing a double spiral groove design significantly boosts chip removal efficiency by 40%, diminishing the likelihood of wood burning during the process.

• Machine thread:

Conforming to ISO metric standards (e.g., M8 × 1.25), a pre-drilled hole with a 7.0mm diameter is necessary, making them ideal for high-density hardwoods, such as oak and walnut.

Thread depth: Comprising 70-80% of the total screw length, it ensures that the engagement length is at least two times the diameter, offering a robust hold.

3. Rod structure

• Smooth rod section: This non-threaded area of 3-5mm below the head is designed to avoid unnecessary compression and cracking of the wood, maintaining structural integrity.

• Cone control: The rod's diameter subtly tapers by 0.1-0.2mm from head to bottom, fostering a self-locking effect that enhances pull-out resistance by 25%, ensuring secure fastening.

Anti rust coating:
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summarize

The external hexagonal wood screw is a marvel of engineering, delivering exceptional torque transmission via its hexagonal head, complemented by versatile self-tapping or machine tooth threads for various wood applications. Its anti-rust coating ensures adaptability to diverse environmental conditions. When choosing the optimal screw, consider the wood's hardness, load-bearing requirements, and environmental factors. Favor products compliant with the GB/T 15234 standard, ensuring installation excellence through practices like pre-drilling and precise torque control.