Wire Wrap Tool

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Now for a hand tool requested by almost every experienced engineer! This Wire Wrap Tool wraps, unwraps, and even strips the appropriate wire diameter with a unique built-in stripper blade. This tool is ideal for work bench use and is extremely handy to find in tool kits in all service and repair applications. In addition to versatility, convenience, and reliability, this Wire Wrap Tool offers exceptional value.

This tool is recommended for .025” square terminals on .100” centers, Modified Wrap, Gauge 30 AWG, Terminal Hole Diameter 0.036 inches, Terminal Hole Depth 1.5 inches, Outside Diameter 0.125 inches, Square Post 0.025 inches.

  • Wire Gauge: 30 AWG (0.25 mm)
  • Maximum Insulation Diameter: 0.021” (0.53 mm)
  • Terminal Hole Dia.: 0.036” (0.91 mm)
  • Terminal Hole Depth: 1.50” (38.1 mm)
  • Outside Diameter: .125” (3.2mm)
  • Wrap Post Size: 0.025” (0.63 mm)

Wire Wrap Tool Product Help and Resources

Working with Wire

February 8, 2013

How to strip, crimp, and work with wire.

How to Use a Wire Wrap Tool

For more information on how to use a wire wrap tool, check out our "Working with Wire:How to Use a Wire Wrap Tool" tutorial:

Tutorial Wire Wrap

Wire Wrap and Solder for More Permanent Connection

Prototype by wire wrapping thin wire to a header before soldering for a secure and permanent connection. For a demo video, check out this tip. Make sure to insert the wire at the end of the tool.

Core Skill: DIY

Whether it's for assembling a kit, hacking an enclosure, or creating your own parts; the DIY skill is all about knowing how to use tools and the techniques associated with them.


Skill Level: Competent - You might need to break out the power tools. Nothing beyond a power drill or rotary tool should be required, but you might have a hard time with just a screwdriver and hammer. Cutting holes into plastic or metal might be required.
See all skill levels


Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • sprior / about 4 years ago / 3

    I got mine in high school in the early 80's and still use it, it is just so good for making reliable connections that might not be permanent. Just last month I used it to wire up a 3D printer monitor which is made from a mini ESP8266 NodeMCU module and an OLED display in a 3D printed enclosure. I thought it was funny that the wiring technology wasn't even from the same century as the rest. Picture of it is here: https://www.thingiverse.com/make:563079

  • Member #134773 / about 4 years ago / 3

    Gee -- just realized I've never commented on this tool.

    I've been doing electronics for more than 50 years, and got my OK Industries Wire Wrap tool back in the mid-1970s. (IIRC, I paid less than $10. Inflation sure has hit this!) I used it for most of the connections in the first computer I built. It worked great, and still does! If you're reasonably careful with it, and don't abuse it, it'll probably last for several generations of hobbyist use.

    I've used several different "power" wire-wrapping tools, and always come back to the OK Industries tool, because it's much easier to maneuver onto the right pin, and much lighter weight than the others. Once you get the knack for spinning it between your thumb and forefinger on the end used for unwrapping, it's easy to do a good connection.

    There's a little bit of a knack for using the stripper: shove the wire through it, then push the wire into the gap. Use a fingernail to get it to "bottom out". I generally use a small pair of pliers that do NOT have serrations on the jaws to pull the wire through the stripper.

    As with any tool, you may mess up the first few times you use it, but once you get the knack of it, the only way to beat it is with a CNC wire-wrap tool, that you'd spend some really big bucks on.

    BTW, I don't recommend skimping on either the wire (go ahead and get the silver plated stuff) or the sockets (with gold plated pins). Although it sounds extravagent, the silver-to-gold makes very good electrical connections.

  • saccade / about 4 years ago / 2

    These are still manufactured? By the same company?


  • bobdabiulder / about 4 years ago / 1

    Will this work on the pins of an arduino nano?

    • Doing a search for the Arduino Nano, it looks like it uses square 0.1" straight male headers. You should be able to use wire wrap and the wire wrap tool to connect. There should be some update information in our Working With Wire tutorial. I add that section a few months ago. =)

      Here's what you will expect when using the tool to connect wire wrap to male header pins soldered on a microcontroller.

      Pro Micro Connected to an LED with Wire Wrap

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