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Solid Pins

Barbed Solid Pins

SPIROL's Barbed Pins were created specifically for use in flexible plastics where optimum resistance to axial force is desired. The raised barbs are angled backwards, opposite the direction of insertion. After installation, the plastic will backfill into the area around the barbs resulting in maximum retention. Barbed Pins are ideal for applications requiring high pull-out (tensile) strength, and to prevent disassembly (i.e. tamperproof ). Barbs are not appropriate for brittle plastics or those containing high percentages of fillers. As barbs are a radial feature, they do not resist rotation of two components relative to one another. For this requirement, a straight or helical knurl should be used. All Barbed Pins are provided with a generous pilot to facilitate alignment with the hole and ease installation.

If installation equipment is required, SPIROL also offers a standard comprehensive line of Pin Installation Equipment from manual to fully automatic modules, with or without out fixturing, to support your Solid Pin assembly requirements.

Application Engineering Assistance: If you would like assistance in selecting the proper Solid Pin - including determining the recommended hole size, tolerance and installation method - please Request Engineering Support!  We are here to help!

Barbed Pins Product Types


Press-N-Lok™ Pin

SPIROL's BP100 Press-N-Lok™ Pin has opposing barbs on each end of the pin and is designed to permanently retain two plastic components to each other such as two halves of a plastic enclosure.

Press-N-Lok™ Pins are installed in two stages:

Step 1: Press the pin into one half of the plastic housing.

Step 2: Align the other half of the housing with the exposed end of the pin and press into place.

During installation, the plastic will backfill into the area around the barbs resulting in maximum resistance to axial force. SPIROL's Press-N-Lok™ Pins are manufactured from lightweight, lead free aluminium as a standard, and available to order in austenitic stainless steel. BP100 Press-N-Lok™ Pins are available in diameters ranging from 2mm to 4mm.

Press-N-Lok™ Specifications See the Press-N-Lok™ Pins in Action
barbed press-n-lok solid pins

Headed Barbed Pin

SPIROL's FH400 Headed Barbed Pin has a series of barbs extending down the entire length of the pin. Headed Barbed Pins are a great replacement for self-tapping screws in plastic assemblies as Barbed Pins are installed into standard moulded (or drilled) holes, they install much faster than screws, and they eliminate issues associated with cross-threaded or skewing during installation. Unlike screws that resist back-out (or loosening) by being tightened to a preset torque, Barbed Pins are retained by the plastic backfilling over the aggressively-designed barbs. The head provides a positive stop and is also used to retain a thin component to a thicker component within an assembly. SPIROL's FH400 Headed Barbed Pins are available in metric diameters ranging from Ø2mm to Ø6mm and inch diameters ranging from Ø.078" (5/64) to Ø.250" (1/4) in low carbon steel and austenitic stainless steel.

FH400 Specifications
headed barbed solid pin

Customisable Solutions

If you are unable to find the Barbed Solid Pin in the diameter, length, material, or finish that you require within our standard offering, or if you are unsure what type of 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.

Request Engineering Support
Your Total Assembly Solution

Installation Technology for Pins

In addition to a comprehensive line of engineered components used for joining and assembly, SPIROL also offers a full range of Pin Installation Equipment designed to facilitate cost-effective and high quality assembly of your products. Our installation solutions range from manual machines to fully automatic work cells with statistical process control and error-proofing options. We are the only company of our kind that offers the total integrated solution.

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Application Success Stories

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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