STAINLESS STEEL FULL LENGTH TAPER GROOVED PINS DIN 1471

Full Length Taper Grooved Pins DIN 1471 — Full Length Taper Grooved Pins to DIN 1471 have three grooves rolled along their entire length, tapering slightly in depth, so the raised ridges create an interference fit — and therefore grip — along the whole length the pin engages, rather than concentrating it at one end. That full-length engagement gives this type the highest pull-out resistance among the grooved pin family, making it the default choice wherever a grooved pin needs to resist axial movement as strongly as possible: locating and retaining components in a standard drilled hole without the cost or time of reaming, transmitting light shear loads between two parts, and general mechanical, agricultural, and engineering assemblies where a self-retaining pin is preferred over a dowel pin's precision-hole requirement. The core advantage over a dowel pin is exactly that hole tolerance: the grooves generate their own grip, so a standard drilled hole (rather than a reamed one to a specific tolerance class) is normally sufficient, which saves a manufacturing step wherever the application doesn't need dowel-pin-level positional accuracy. Choosing this over the half-length version (DIN 1472) or the centre-groove version (DIN 1475) comes down to how much of the pin's length actually needs to grip: if both components being joined should be gripped firmly along the full engagement, DIN 1471 is the right choice; if only one component should grip while the pin passes more freely through another, a partial-length grooved pin is the better fit. Grade selection follows standard fastener logic: A2 stainless suits the great majority of general engineering and agricultural assembly, while A4 is worth the extra cost outdoors or in washdown, marine, or de-icing salt exposure, since pitting on the grooved ridges directly reduces the grip the pin relies on. Diameter is chosen to suit the drilled hole size specified for the application, and length should be enough to fully engage the intended depth without protruding awkwardly at either end.

FAQs
How do grooved pins differ from dowel pins?
Dowel pins rely on a precisely reamed hole to achieve their fit. Grooved pins, including DIN 1471, generate their own interference fit through the grooved ridges, so they can be used in a standard drilled hole without reaming.

How does DIN 1471 differ from DIN 1472?
DIN 1471 is grooved along its full length, while DIN 1472 is grooved over only half its length, leaving a plain shank on the remainder. DIN 1471 is generally chosen where retention is needed along the whole engagement, while DIN 1472 suits assemblies where only partial engagement should grip.

Can DIN 1471 pins be reused after removal?
They can be withdrawn and refitted, but each removal slightly compresses and wears the grooved ridges, so the grip achieved on reinsertion is somewhat reduced compared with a first-time fit — for a critical retention, a fresh pin is the safer choice.