Self Tapping Bolts with Full Thread for Easy Installation

• 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 versatile fasteners designed for robust connections in wood and wood composite materials. Featuring a unique blend of hexagonal heads paired with self-tapping/machine tooth threads, these screws deliver seamless installation and durable performance. Masterfully engineered to optimize torque transmission and enhance wood compatibility, they ensure a secure grip. Our exploration will cover four pivotal dimensions: structural characteristics, technical parameters, application scenarios, and selection criteria, providing a comprehensive understanding of their utility.

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1, Structure and Function Analysis

1. Head Design

Hexagonal Drive: Crafted in accordance with ISO 4032/GB 5648 standards, this design is compatible with conventional sockets and wrenches, ensuring exceptional torque transmission efficiency. It offers a remarkable 30% increase in anti-slip force compared to traditional cross grooves, making it an ideal choice for demanding applications.

• Transition Fillet: With a carefully calculated R0.5-R1.0 fillet at the junction of the head and rod, this design effectively disperses stress, mitigating the risk of splitting and ensuring long-lasting durability.
2. Thread System

Self-tapping Thread:

• Sharp Tip Design: Boasting an 82° cone angle with 3-5 high-pitch teeth (e.g., M6 × 1.0), this design proficiently extrudes wood fibers to form threads without the necessity for pre-drilling. It’s perfectly suited for softer woods like pine, with hardness ratings up to HB60.

• Chip Removal Groove: The innovative double spiral groove design significantly boosts chip removal efficiency by 40%, reducing the likelihood of wood burning and enhancing overall application safety.

• Machine Thread:

Adhering to ISO metric standards (e.g., M8 × 1.25), these threads necessitate a pre-drilled hole of 7.0mm diameter, making them ideal for high-density hardwoods like oak and walnut.

Thread Depth: Occupying 70%-80% of the total screw length, this depth ensures an engagement length that is at least twice the diameter, guaranteeing a steadfast hold.

3. Rod Structure

• Smooth Rod Section: Featuring a non-threaded segment of 3-5mm directly beneath the head, this design mitigates local compression and reduces wood cracking.

• Cone Control: With a gradual rod diameter reduction of 0.1-0.2mm from head to bottom, a self-locking mechanism is formed, enhancing pull-out resistance by an impressive 25%.

Anti-Rust Coating:
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Summarize

The external hexagonal wood screw excels in providing superior torque transmission and adaptability for various wood types, thanks to its precision-engineered hexagonal head and diverse thread options. When paired with an anti-rust coating, it ensures resilience against environmental challenges. To select the ideal screw, consider the wood's hardness, load-bearing needs, and potential exposure to corrosive elements. Prioritize products compliant with GB/T 15234 standards, and ensure top-notch installation quality through strategic pre-drilling and meticulous torque control.