Dowel Pins


Precision Dowel Pins

Dowel pins are used to fasten and align machine parts together.

When designing mechanical components, mechanical engineers typically use dowel holes as reference points to control positioning variations. If something other than a dowel pin is used for alignment, there can be significant variation in component positioning. They can also be used as locators so that a part can be removed and will retain its accurate location when replaced. Dowel pins allow for tighter tolerances than screws.

Stainless Steel Inch & Metric Dowel Pins

PIC Design specializes in high-quality, precision stainless steel metal dowel pins — which are machined to tight tolerances, as are the corresponding holes. We offer both inch & metric dowel pins. PIC usually manufactures dowel pins in diameters of 1/3” to 1/2" (1 mm to 12 mm) and lengths of 3/32” to 1-1/2” (3 mm to 50 mm). If standard dowel pin sizes aren’t appropriate for your project, PIC will happily manufacture your custom design.

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Custom Dowel Pins

The following specifications define our standard stainless steel metal dowel pins sizes, fit specification, and standard materials options:

  • Diameter: 1/32’’ to ½’’, 1 mm to 12 mm
  • Length: 3/32’’ to 1 ½’’, 3 mm to 50 mm
  • Fits - Slip, Press/Interference
    • Slip Fit: The dowel pin has a smaller diameter so that it freely slips into the hole
    • Press Fit: The dowel pin has a larger diameter and must be pressed into the hole
    • Tolerance: Slip (+.0000/-.0002”) and Press Fit (+.0002/-.0000”)
  • Standard Material: 303 Stainless Steel, 416 Stainless Steel - Hardened to 36-42Rc, Carbon Steel - Hardened to 60Rc

Dowel Pin Applications

With a product like this, a diverse selection is necessary. Our expert staff is ready to meet a wide range of customer needs. Some applications are more demanding than others, requiring dowel pins that may be difficult to find elsewhere. With our expansive inventory and custom capabilities, PIC can keep you on target by helping you find the right product for your job. Request a quote today!

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HOW CAN WE HELP YOU?

Our goal at PIC is to provide exceptional customer service. We can assist you online, or you may reach us by email or phone. Our experienced customer service representatives can provide answers to: placing an order, requesting a quote, price and delivery, order status, and product cross references.

Contact us today and allow PIC to Keep You on Target!


  • 8:00 AM - 6:00 PM (ET), Mon-Thurs
    8:00 AM - 5:00 PM (ET), Fri
  • 86 Benson Rd., Middlebury,
    CT 06762
  • 203-758-8272
    +1 800-243-6125
  • 203-758-8271