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Dowel & Spring Pins

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About Dowel & Spring Pins

Dowel pins and spring pins locate and hold machine parts in exact positions. Hardened dowel pins are pressed into reamed holes to align dies, fixtures, gearboxes and mould plates so they go back together in the same place every time. Pull-out dowel pins have an internal thread so they can be removed from blind holes, and spring pins such as Sel-Lok pins are slotted, springy pins that grip the hole wall and are used as hinge pins, stop pins and fasteners in machinery and assemblies.

Choose the pin by diameter and length first, in metric or inch sizes to match your drawing. Dowel pins need a reamed hole for a press fit, while spring pins fit drilled holes and absorb small size variations. Use a pull-out dowel where the hole is blind or the part must be taken apart often. Check the material and hardness for the load, and press pins in straight with a suitable press or punch rather than hammering them at an angle. Fit the same pin standard on both parts so the hole tolerances match.

We list Unbrako dowel pins, pull-out dowel pins and Sel-Lok spring pins in metric and inch sizes at prices that include GST, with a GST invoice on every order and delivery across India. Toolrooms, mould makers and maintenance teams can ask for a bulk quotation.

Questions buyers ask

What is the difference between a dowel pin and a spring pin?

A dowel pin is a solid hardened pin pressed into a reamed hole for exact location. A spring pin is a slotted, springy pin that grips a drilled hole and suits fastening and hinge uses.

When should I use a pull-out dowel pin?

Use a pull-out dowel pin in blind holes or where parts are taken apart often. Its internal thread lets you pull it out with a screw or extractor.

Are these pins available in inch sizes?

Yes. We list both metric and inch dowel pins and Sel-Lok pins; check the size on each product page.

Do prices include GST?

Yes. Prices include GST and every order gets a GST invoice.