Round Headed Grooved Pins DIN 1476 — Round Headed Grooved Pins to DIN 1476 add a formed head to a grooved shank, so the pin seats against the surface of the component it's driven into rather than being installed flush or pushed all the way through, giving a positive, visible stop for insertion depth that the headless grooved types (DIN 1471 through DIN 1475) don't have. That head makes this the right choice wherever the pin shouldn't disappear entirely into its hole — where a visible or functional head is wanted, such as a simple handle, a stop, or a clevis-type pivot pin — and it also gives a natural retaining feature at one end for basic hinge or linkage applications, since the head prevents the pin being driven or pulled through in that direction (though a secondary retaining feature at the shank end may still be needed depending on which way the joint is loaded). Installation follows the same principle as other grooved pins: the shank is driven in, grooved end first, into a standard drilled hole sized for the intended interference fit, with no reaming required, until the head seats flush against the component surface — which means hole depth needs to accommodate the full grooved shank while leaving the head proud, and head diameter is sized in proportion to the pin diameter as set out in the standard. Compared with a plain grooved pin, the head adds a small manufacturing step but removes any ambiguity about how far the pin should be driven, which is useful in less controlled or manual assembly settings. Grade choice is standard for the pin range: A2 stainless for typical indoor mechanical and hinge applications, A4 where the pin is used outdoors, in washdown environments, or wherever marine air or de-icing salt would otherwise pit the grooved section and reduce its grip over time. Diameter and length should be chosen from the standard's tables based on the hole and shank engagement required, with head diameter following automatically from the pin size selected.
FAQs
How does DIN 1476 differ from headless grooved pins such as DIN 1471–1475?
The other grooved pin variants have plain or chamfered ends with no head, relying solely on the grooved shank for retention and typically installed flush. DIN 1476 has a formed head that provides a hard stop and a visible or gripping feature at one end.
Can DIN 1476 pins be used as hinge or clevis pins?
Yes, the head provides a natural retaining stop at one end, making these pins suitable for simple hinge, clevis, or linkage applications where a headless pin might otherwise be pushed through. A secondary retaining feature at the shank end may still be required depending on load direction.
Does the formed head add strength compared with a headless grooved pin?
Not materially — the head is mainly a depth stop and a retaining feature at one end, not a load-carrying element; shear and retention capacity are still governed by the grooved shank diameter and engagement length, the same as for the headless variants.