Stepped and Shouldered Dowel Pins
A stepped pin does two jobs at once: it locates in one hole and registers against a shoulder, or it locates two parts with different hole sizes without needing a bushing. Because everything here is turned from bar rather than drawn from stock, a stepped profile costs a little more than a plain pin rather than an order of magnitude more, and a profile nobody has ordered before is priced online in the same breath as a standard one.
The configurator takes up to eight sections. Each cylindrical section carries its own diameter and its own tolerance grade, so a pin can be held tight where it locates and left loose where it does not. It is worth knowing how that prices: the tightest grade anywhere on the part sets the premium for the whole pin, so relaxing a non-critical section records the design intent for inspection without changing the quote. If cost is the concern, the lever is the tightest grade the part genuinely needs, not how many sections share it. Tapers can sit between sections as a lead-in or a transition.
Two practical constraints worth knowing before configuring. Adjacent sections have to differ in either diameter or tolerance grade, since two identical adjacent sections are simply one longer section. And a taper needs a section on each side with different diameters, because it has no diameter of its own to be held to.
Materials
- Stainless Steel 303 dowel pins
- Stainless Steel 304 dowel pins
- Stainless Steel 316 dowel pins
- Stainless 17-4 H900 dowel pins
- Stainless Steel 440C dowel pins
- Alloy Steel 4140 dowel pins
- Aluminum 6061 dowel pins
- Aluminum 7075 dowel pins
- Brass 360 dowel pins
- Titanium Grade 5 dowel pins
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