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Solid Pins

Additional Options

You can rely on SPIROL to be a design partner to help solve unique problems. Because we supply numerous customers with similar products in similar industries, we are able to meet most needs with our standard products at no additional cost. When the solution falls outside the normal requirements, we have the expertise and engineering personnel to solve those problems. By working with you at the design stage, we will develop a solution that lowers your overall product cost, improves product quality, increases the robustness of your manufacturing process, and gets you to market faster.

When reviewing your application, SPIROL’s Application Engineers will first attempt to use a standard product to meet your technical requirements as this offers the most affordable solution and will reduce your total manufacturing cost.

During our engineering review, if a standard Solid Pin cannot meet your application or assembly requirements, our Engineers will design a special pin to meet your needs. Many specials are derivations of our standard products and can be produced with minimal investment in development. Others are completely unique and may require a larger investment in development or special processing on our CNC machinery.

As an example, while SPIROL's standard Knurled Pins have a knurl that spans the full length of the pin, it is sometimes necessary for the purpose of assembly, retention or function to modify the knurl length or location on the pin.  SPIROL's Application Engineers are available to assist you in the design of a custom Knurled Pin to meet your specific application requirements.

Application Engineering Assistance: If you would like assistance in selecting or designing the proper Pin for your application, including obtaining the critical recommendations for hole sizes and tolerances, please Request Technical Support!  We are here to help!

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Special Sizes

SPIROL can manufacture special configured Solid Pins and large diameter special Solid Pins in low volumes up to Ø19mm (Ø.750”) in diameter and 75mm (3”) in length.

Special Surface Configurations

SPIROL can manufacture Solid Pins with multiple diameters, grooves, knurls, threads, elongated chamfers, heads, center holes, side holes, as well as those that are turned, shaved, burnished, broached, back drilled, and counterbored.

The location and length of the knurls and barbs can be positioned anywhere along the body of the pin to accommodate application-specific requirements.

Special Materials

In addition to the standard materials,, SPIROL’s production technology enables us to produce Solid Pins out of a variety of materials. The most common alternate materials are:

  • Alloy steel
  • Aluminum
  • Brass
  • Martensitic Stainless Steel

Special Finishes

SPIROL Engineers have extensive experience in recommending the right combination of materials and finishes to meet application-specific requirements.

Additional Solid Pin Types

Straight / Dowel Pins
Straight / Dowel Pins
Knurled Pins
Knurled Pins
Barbed Pins
Barbed Pins
Application Specific Solid Pins
Application Specific Solid Pins

Customizable Solutions

If you are unable to find the Solid Pin in the diameter, length, material, or finish that you require within our standard offering, or if you are unsure what Pin is most appropriate for your assembly, Request Engineering Support from our team and we will help you select the most cost-effective solution for your application.

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Local Design, Global Supply.

SPIROL has Application Engineers throughout the world to assist you in your designs, supported by state-of-the-art manufacturing centers and worldwide stocking facilities to simplify the logistics of delivering your product.

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Frequently Asked Questions

When should I use a Solid Pin instead of a Coiled Pin or Slotted Pin?
Unlike Coiled Pins and Slotted Pins, Solid Pins are permanent fasteners. While more than one type of pin may meet certain requirements, here are some general guidelines when a Solid Pin may be the best option: When a head is required for a positive stop or to retain a thin member to a thicker member of the assembly. When a smooth, uninterrupted surface is required such as when used in conjunction with a pawl or other angular component. When a hollow pin is not suitable such as when the designer is looking to plug a hole (i.e. Restrict passage of liquids). When there is a need to manually align several clearance holes. When increased bending or shear strength is required. When precise hole locations need to be maintained. They are also conducive to automated installation and commonly used to replace screws.
How does SPIROL manufacture Solid Pins?
The two common manufacturing methods used to produce Solid Pins are cold heading and machining. SPIROL uses both technologies, but cold heading technology is used to produce our standard product offering. Cold heading is the preferred manufacturing method for the vast majority of applications because it is scrap-less and significantly less expensive than machining at high volumes (> 50,000 pcs). For more information, read this White Paper: The Difference Between Cold Headed and Machined Solid Pins.
How do I know whether to use a dowel/straight pin or a pin with features like knurls or barbs?
Dowel Pins / Straight Pins are commonly used as axles or hinges. Conversely, features like knurls and barbs provide the mechanism to retain the pin in one or more components. Manufacturers should consult with pinning experts at the early stages of their product design to ensure the optimal pin is selected. If you would like SPIROL's Applications Engineers to review your application, contact us at any one of our Global Locations or fill out this form and one of our Pinning Specialists will contact you shortly after we receive your application information.
Have a Question? We're Here to Help!

Have a manufacturing issue you can't solve? Our engineering experts love a challenge. Recommending efficient solutions for your application requirements is what we do best. Give us a call or fill out the form below to connect with us!

+1 860 774 8571