Using grooved pins - ISO 8745 / DIN 1472

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The type of grooved pin you need depends on what specific purpose it will serve.

Grooved pins can have various uses in an assembly:

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• Solidity: Holding two parts together thanks to their machined grooves and the pressure they exert on the hole in which they are inserted.
• Connection & rotation: Grooved pins allow for pivot movement between two elements, like in door hinges.
• Positioning: Grooved pins enable two parts to be positioned relative to each other, in order to then add another fastener, e.g. a screw.

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Based on these three functions, we can recommend the type of pin best suited to your needs.

In most cases, we would recommend using ISO 8745 / DIN 1472-standard pins to meet connection needs in assemblies where one part must be able to rotate relative to another.

When one part can freely rotate in relation to another, pins with grooves across their entire length cannot be used. In this case, you will need to opt for a pin with grooves on one side only, in its centre or at each end.

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Four types of pins can be used in this case:

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• ISO 8741 / DIN 1474
• ISO 8742 / DIN 1475
• ISO 8743
• ISO 8745 / DIN 1472

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Using a pin with grooves on only one side like the ISO 8745 / DIN 1472 allows the pin to be fastened to one part thanks to its grooved side, while the smooth side enables the second part to rotate freely.

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The ISO 8745 / DIN 1472-standard pin is equipped with through grooves across half its length, allowing it to fit snugly into assemblies.

This is what makes this grooved pin different from the ISO 8742 / DIN 1475 or ISO 8743, which have grooves in their centre.

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