Grooved pins - ISO 8746 & ISO 8747

Grooved pins, ISO 8746 - ISO 8747

Grooved pins - ISO 8746 & ISO 8747

Introduction to ISO 8746 & ISO 8747 grooved pins


A grooved pin is a type of pin that has grooves or splines on its shaft. These indentations improve shrinkage resistance, increasing the pin's ability to securely hold materials together. They are widely used in applications where extra adhesion is required, e.g.:

  • Frame construction
  • Carpentry
  • Fastening insulating material

The pin's grooves allow for better hold in the material, thus improving the stability of the joint with elastic-like tightening.

Grooved pins have a shank with a bulge diameter greater than the pin's nominal diameter. Since the part they are inserted into has a slightly smaller diameter than the bulge diameter, the metal "flows" into the material, allowing for excellent hold.

How are Gardette grooved pins made?

Manufacturing grooved pins generally involves cold forming, a process whereby the metal is deformed at room temperature to give it the desired nail shape. The metal is first cut into precise lengths before being put into a press where it is subjected to impacts.



Next, the pins go through a die in order to form the grooves.

This process creates the grooves and strengthens the metal, improving the pin's resistance and durability.

Finally, the grooved pins may undergo a finishing treatment, such as galvanising, to protect them against corrosion. Our rigorous inspection procedure ensures compliance with quality standards before we pack and ship the pins. It should be noted that manufacturing techniques may vary depending on specifications and the type of grooved pins.

ISO 8746 & 8747 groove pins

There are various types of grooved pins, with different specifications, shapes and sizes:

Technical specifications of the ISO 8746 grooved pin

The ISO 8746 grooved pin has indents on its surface in order to increase adherence between the hole and the material in which it is embedded. Its bulge diameter adapts to the housing without removing material.

The ISO 8746 standard groove pin is made from steel but can also be produced in other materials on request.


Its round head, slightly wider than the shank, offers several advantages:

  • Torsion resistance: The round head - slightly wider in diameter than the shank - is harder to deform.
  • Puncture resistance: The round head protects the shank from being punctured, preventing the shank from breaking when the pin is inserted.

This is a highly sought-after part in many industries, such as:

  • Construction: ISO 8746 grooved pins' round head makes them ideal for fastening beams, columns and walls. The friction resistance of the ISO 8746 grooved pin also meets the requirements of such elements.
  • Carpentry: the ISO 8746 grooved pins' round head enables them to be used to fasten doors and fuse boxes, and the torsional strength offered by the ISO 8746 groove pin is sufficient for such applications' fastening needs.

Features of the ISO 8747 grooved pin

ISO 8747 groove pins have grooves on their surface, increasing hold between the hole and the material in which it is inserted. The pins' bulge diameter adapt to their housing without any material removal.

ISO 8747 grooved pins are made out of steel, but can be manufactured from other materials on request.

This component, with its countersunk head, offers a few key advantages:

  • A clean finish: The pin's countersunk head is slightly inserted into the material, making for a sleek finish.
  • Low risk of protrusion: The width of the head lessens the risk of protrusion once the pin is installed.
  • Very few vibrations: This pin's countersunk head, slightly pressed into the material, reduces and absorbs vibrations.

This part is highly sought-after in sectors where a clean and careful finish is essential, such as:

  • Repairs: A clean and neat finish is important in construction - should you wish to offer your client a sleek finish, the ISO 8747 grooved pin is highly recommended.
  • Decoration: A clean and careful finish is required in decorations, making the ISO 8747 grooved pin an ideal choice in this case.

Which grooved pin should you choose?

Choosing the right grooved pin is no small task - should you have any queries, feel free to contact us, we would be happy to help you make your choice. An expert from our team will get back to you in under 48 hours.

What are grooved pins?

ISO 8746 and ISO 8747 grooved pins are nail-like pins with grooves on their shanks. These grooves increase shrinkage resistance, making the pin more effective at holding materials firmly together. They are often used in applications where particular adhesion is required, such as:

  • Frame construction
  • Carpentry
  • Fastening insulating material.

The pins' grooves allow for a better grip in the material, improving the joint's stability with elastic-level tightness.

Their grooved shank can reach a bulge diameter greater than its nominal diameter. This means that when installed, the material's diameter will be slightly smaller than the bulge diameter, allowing the metal to "flow" in and thus ensure maximum tightness.

How are grooved pins manufactured?

Producing grooved pins to ISO 8747 and ISO 8746 standards usually involves cold forming, a process used to deform metal at room temperature into the required pin shape. The metal is first cut into precise lengths before being inserted into a machine to be pressed.

The metal is then put through a die to form the grooves. This process also strengthens the metal, increasing the pins' overall strength and durability.

Finally, the pins can undergo finishing operations such as galvanising to protect them from corrosion. Our meticulous inspection procedure allows us to ensure compliance with quality standards before we package and ship our ready-to-use pins. It should be noted that manufacturing techniques may differ depending on technical specifications and the type of grooved pins.

Grooved pins - ISO 8746 & ISO 8747

Grooved pins, ISO 8746 - ISO 8747

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Introduction to ISO 8746 & ISO 8747 grooved pins


A grooved pin is a type of pin that has grooves or splines on its shaft. These indentations improve shrinkage resistance, increasing the pin's ability to securely hold materials together. They are widely used in applications where extra adhesion is required, e.g.:

  • Frame construction
  • Carpentry
  • Fastening insulating material

The pin's grooves allow for better hold in the material, thus improving the stability of the joint with elastic-like tightening.

Grooved pins have a shank with a bulge diameter greater than the pin's nominal diameter. Since the part they are inserted into has a slightly smaller diameter than the bulge diameter, the metal "flows" into the material, allowing for excellent hold.

How are Gardette grooved pins made?

Manufacturing grooved pins generally involves cold forming, a process whereby the metal is deformed at room temperature to give it the desired nail shape. The metal is first cut into precise lengths before being put into a press where it is subjected to impacts.



Next, the pins go through a die in order to form the grooves.

This process creates the grooves and strengthens the metal, improving the pin's resistance and durability.

Finally, the grooved pins may undergo a finishing treatment, such as galvanising, to protect them against corrosion. Our rigorous inspection procedure ensures compliance with quality standards before we pack and ship the pins. It should be noted that manufacturing techniques may vary depending on specifications and the type of grooved pins.

ISO 8746 & 8747 groove pins

There are various types of grooved pins, with different specifications, shapes and sizes:

Technical specifications of the ISO 8746 grooved pin

The ISO 8746 grooved pin has indents on its surface in order to increase adherence between the hole and the material in which it is embedded. Its bulge diameter adapts to the housing without removing material.

The ISO 8746 standard groove pin is made from steel but can also be produced in other materials on request.


Its round head, slightly wider than the shank, offers several advantages:

  • Torsion resistance: The round head - slightly wider in diameter than the shank - is harder to deform.
  • Puncture resistance: The round head protects the shank from being punctured, preventing the shank from breaking when the pin is inserted.

This is a highly sought-after part in many industries, such as:

  • Construction: ISO 8746 grooved pins' round head makes them ideal for fastening beams, columns and walls. The friction resistance of the ISO 8746 grooved pin also meets the requirements of such elements.
  • Carpentry: the ISO 8746 grooved pins' round head enables them to be used to fasten doors and fuse boxes, and the torsional strength offered by the ISO 8746 groove pin is sufficient for such applications' fastening needs.

Features of the ISO 8747 grooved pin

ISO 8747 groove pins have grooves on their surface, increasing hold between the hole and the material in which it is inserted. The pins' bulge diameter adapt to their housing without any material removal.

ISO 8747 grooved pins are made out of steel, but can be manufactured from other materials on request.

This component, with its countersunk head, offers a few key advantages:

  • A clean finish: The pin's countersunk head is slightly inserted into the material, making for a sleek finish.
  • Low risk of protrusion: The width of the head lessens the risk of protrusion once the pin is installed.
  • Very few vibrations: This pin's countersunk head, slightly pressed into the material, reduces and absorbs vibrations.

This part is highly sought-after in sectors where a clean and careful finish is essential, such as:

  • Repairs: A clean and neat finish is important in construction - should you wish to offer your client a sleek finish, the ISO 8747 grooved pin is highly recommended.
  • Decoration: A clean and careful finish is required in decorations, making the ISO 8747 grooved pin an ideal choice in this case.

Which grooved pin should you choose?

Choosing the right grooved pin is no small task - should you have any queries, feel free to contact us, we would be happy to help you make your choice. An expert from our team will get back to you in under 48 hours.

What are grooved pins?

ISO 8746 and ISO 8747 grooved pins are nail-like pins with grooves on their shanks. These grooves increase shrinkage resistance, making the pin more effective at holding materials firmly together. They are often used in applications where particular adhesion is required, such as:

  • Frame construction
  • Carpentry
  • Fastening insulating material.

The pins' grooves allow for a better grip in the material, improving the joint's stability with elastic-level tightness.

Their grooved shank can reach a bulge diameter greater than its nominal diameter. This means that when installed, the material's diameter will be slightly smaller than the bulge diameter, allowing the metal to "flow" in and thus ensure maximum tightness.

How are grooved pins manufactured?

Producing grooved pins to ISO 8747 and ISO 8746 standards usually involves cold forming, a process used to deform metal at room temperature into the required pin shape. The metal is first cut into precise lengths before being inserted into a machine to be pressed.

The metal is then put through a die to form the grooves. This process also strengthens the metal, increasing the pins' overall strength and durability.

Finally, the pins can undergo finishing operations such as galvanising to protect them from corrosion. Our meticulous inspection procedure allows us to ensure compliance with quality standards before we package and ship our ready-to-use pins. It should be noted that manufacturing techniques may differ depending on technical specifications and the type of grooved pins.

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