Using grooved pins - ISO 8743

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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 8743 / DIN 1476-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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Three 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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Pins with grooves at their centre, like the ISO 8743, are commonly used for clevis mounts, allowing the pin to be fastened onto a central part, while still being able to rotate at its ends.

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The ISO 8743-standard pin is equipped with central grooves along half its length, enabling the pin to be fastened onto a centre part while retaining some ability to rotate at each end.

This is what makes this groove pin different from the ISO 8741 / DIN 1474 and ISO 8745 / DIN 1472 models, which have grooves on their sides.