Custom Cold Heading Dowel Pin

Product Description:

The product Custom Cold Heading Dowel Pin produce by cold heading is an challege process. Take a coil of wire, cut it to length, and then hammer it into shape at room temperature. What happens is the grain flow follows the contour of the part rather than getting cut across, which makes these pins stronger than machined equivalents. They also come out with a smoother surface finish right from the forming operation, so secondary finishing is often minimal. We make these in standard inch and metric sizes, but custom dimensions are something we do regularly. The key is getting the head-to-shank transition right—that’s where cold heading either works beautifully or fails, and we’ve got that dialed in. We also offer them with different platings and coatings depending on what your environment calls for.

Specification:

Products Details:

Custom Cold Heading Dowel Pin products material selection depends on the application, but we typically work with medium-carbon and alloy steels for these. The cold heading operation work-hardens the material, so we often follow with a controlled heat treatment to relieve internal stresses while maintaining core hardness. Surface finishes are held to a reasonable standard straight off the forming tool. Tolerances on the shank diameter are held to ±0.02mm, which covers most locating applications. Head diameter and thickness are held to ±0.1mm. Each batch gets random sampling for hardness and dimensional verification. We also offer centerless grinding as an added operation if your application calls for tighter tolerances than what cold heading alone can deliver. Threads, grooves, or other secondary features can be added after heading if needed.

Product Feature:

• The cold heading approach gives these pins a strength advantage over machined ones. Instead of cutting through the grain structure, the process flows it along the contour of the part, which translates into better impact resistance and fatigue life when they’re in service.

• There’s hardly any waste with cold heading—you’re basically just reshaping the material rather than cutting it away. That keeps unit costs down, especially on larger orders.

• The surface comes out smooth right from the forming tool, so we don’t usually need to do extra machining on the shank. One less operation means one less thing that can go wrong.

• Once we’ve got the tooling set up right, these parts come out consistent. Run a thousand or run a hundred thousand—they’re going to be the same.

• If you need more than just a plain pin, we can add grooves, threads, or cross holes as secondary operations. Just tell us what your assembly requires.

• Plating is flexible. Zinc, nickel, black oxide—whatever works for your environment. We’ve done all of them and can recommend one based on your application.

Product Application:

• Jigs and fixtures. If you’re machining parts, you need them in the same spot every time. These pins give you that repeatability.

• Injection molds. The two halves have to close perfectly each cycle. These pins keep everything aligned so you don’t get flash or mismatched parts.

• Automotive assembly. Think welding lines where panels get positioned before joining. The pin holds the location so the weld goes where it should.

• Electronics manufacturing. We’re talking about tiny boards with components packed close together. A locating pin that’s even slightly off can throw the whole assembly out of whack. These pins hold everything in place during soldering and placement, so you don’t end up with misaligned parts that fail inspection.

• Aviation tooling. When you’re working on aircraft, everything has to be exact. These pins give you the strength and consistency that industry demands.

• Heavy equipment assembly. Construction machines take a beating, so the pins that locate their parts need to stay put under load.