Dowel Pin

A dowel pin might be a small component, but our precision dowel pins make a big difference to how accurately your assemblies line up. Engineered for secure, repeatable positioning, our dowel pins help eliminate misalignment, vibration, and rework in critical applications. Whether you are building fixtures, machinery, or high-accuracy equipment, our range of dowel pins gives you the confidence that every part locates exactly where it should.

About Our Dowel Pins

Our dowel pins are cylindrical locating elements designed to align and position components with a high degree of accuracy. Press-fit or slip-fit depending on your tolerance requirements, they help you maintain consistent axial and radial alignment between mating parts, even under repeated loads, temperature changes, and disassembly cycles. By choosing our dowel pins, you are investing in predictable assembly quality, smoother installations, and fewer costly adjustments on the shop floor.

Alongside our core dowel pin range, we also offer complementary solutions when your application demands a different style of location or retention. Our Taper Pin options are ideal where self-centering and easy removal are essential, while our Spiral Pin range provides resilient, shock-absorbing fastening in dynamic assemblies.

DIN 6325 Dowel Pins

Our DIN 6325 dowel pins are precision-ground cylindrical pins manufactured to tight tolerances for demanding, high-accuracy assemblies. These pins are typically hardened and ground along the full length, offering excellent wear resistance and dimensional stability even in repeated assembly and disassembly situations. When you need reliable location in fixtures, molds, jigs, and machine components, our DIN 6325 dowel pins help ensure every part seats consistently, reducing misalignment and improving overall process capability.

DIN 7 Dowel Pins

DIN 7 dowel pins from our range are cylindrical, press-fit pins designed for precise axial alignment where extreme hardness is not a requirement. Unlike DIN 6325, these pins are usually not hardened and are therefore well suited for softer assemblies, lighter-duty fixtures, or applications where the surrounding material must not be damaged. They still provide excellent locating accuracy, making them a smart choice for woodworking jigs, light machinery, or assemblies where you need reliable positioning without over-specifying a hardened solution.

ISO 2338 Dowel Pins

Our ISO 2338 dowel pins follow international standards for cylindrical locating pins, with h8 or m6 tolerances available to match your preferred fit. These pins offer compatibility with global design practices, which is ideal if you manufacture or service equipment across multiple regions. By choosing ISO 2338-compliant dowel pins from our lineup, you benefit from consistent dimensions, predictable press or slip-fit behavior, and easy integration into existing drawings and component libraries.

FAQs

What is a dowel pin used for?

A dowel pin is used to locate and align two or more components so they fit together in the same position every time. It acts as a precise reference between parts, keeping them from shifting under load or vibration. You will commonly see dowel pins in machinery, fixtures, tooling, and assemblies where accuracy and repeatability are critical.

Why use dowels instead of screws?

Dowels control position, while screws mainly provide clamping force. Screws can allow small shifts as clearances, vibration, or torque changes act on the joint, but a properly fitted dowel pin keeps components aligned in a fixed location. By combining dowels for alignment and screws or bolts for clamping, you get stronger, more accurate assemblies with fewer alignment issues over time.

Is a dowel pin a fastener?

Yes, a dowel pin is considered a fastening and locating element, but its primary role is alignment rather than clamping. It does not replace bolts or screws for holding two parts together under tension, yet it ensures those parts line up exactly as intended. In many designs, dowel pins and traditional fasteners work together to create a robust, precise joint.

Why is it called a dowel?

The term “dowel” has long been used to describe a small, cylindrical peg used to join or locate pieces of wood or metal. Over time, this simple peg evolved into the precision-ground metal pin used in engineering today, but the name remained. Modern dowel pins keep that traditional term while offering far tighter tolerances and performance than their early counterparts.