Break Away Headers - Straight

A row of headers - break to fit. 40 pins that can be cut to any size. Used with custom PCBs or general custom headers.

  • Pin Style: Square
  • Number of Pins: 40
  • Pin Spacing: 0.1" (2.54 mm)
  • Pin Length: 11.5 mm

Break Away Headers - Straight Product Help and Resources

Rotary Switch Potentiometer Hookup Guide

April 30, 2015

How to use the Rotary Switch Potentiometer breakout board, with some sample applications.

GPS Geo-Mapping at the Push of a Button

September 27, 2019

Let's ramp up our GPS tracking skills with KML files and Google Earth. We'll make a tracker that logs location and allows us to visualize our steps with Google Earth.

Noisy Cricket Stereo Amplifier - 1.5W Hookup Guide

April 26, 2018

A hookup guide for the Noisy Cricket Stereo Amplifier - 1.5W.

Basic Servo Control for Beginners

February 25, 2020

An introductory tutorial demonstrating several ways to use and interact with servo motors!

Dimension of Square Pin

Width of the square pin was measured to be about 0.65mm.

Core Skill: Soldering

This skill defines how difficult the soldering is on a particular product. It might be a couple simple solder joints, or require special reflow tools.

1 Soldering

Skill Level: Noob - Some basic soldering is required, but it is limited to a just a few pins, basic through-hole soldering, and couple (if any) polarized components. A basic soldering iron is all you should need.
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.

  • Thimplum / about 12 years ago / 18

    I command you to come back in stock.

  • BTW, dont use these as combs, they will break

  • Arrowofdarkness / about 13 years ago / 4

    Any chance we can get a bigger pack of them? Or maybe a bundle of three for $5? I use these things like they're candy to a 5 year old, I order some and by lunch time they're all gone, haha.

  • missle3944 / about 13 years ago / 3

    damn... I bought 5 of these things for 20 cents on another website. You guys are expensive but do a bang up job of service and shipping!!!! I like sparkfun

  • NXTreme / about 13 years ago / 3

    I can buy these for 50 cents for a row of 36 at a local store. Sure, you have to make money to stay afloat, but isn't $2.50 a bit steep? $1.50 would be at least somewhat more reasonable, although I still wouldn't buy them for that price. With all the stuff SparkFun is getting from China, you'd think that you could get simple headers for a bit less...

    • It -is- $1.50.

    • razrburn / about 13 years ago / 3

      I must agree, at least a better bulk rate I need like 10 strips, adafruit sells 10- 36 pin for 75 cents each(10x7.50$) but I need the female ones too, that they dont carry.. but its funny you both carry the touch screen breakout board.. I'd rather pay around 1.50$ each for a american made one elsewhere..
      Customer Request: Please add a country origin to your products description, I prefer to buy american made parts when I can, followed by not made in china..
      Due too ever increasing demands and threats by the chinese government from controlling of raw, rare earth minerals, political pressure/demands, and because it supports its governmental control of its people. I'm sure many people here agree everything is coming from china.. I understand not everything can be american, but I'm avoiding buying products imported china.. I dont even regularly shop at walmart. I've shopped at a walmart 2-3 times a year totaling to less than 1,000$ in 5 years.instead I drive twice as far to shop.

      • Ed Hartnett / about 13 years ago / 8

        I must disagree with complaints that these are overpriced. SparkFun is a hobbyist's dream company, developing boards, prototyping stuff, and giving great advice. It's fair that the should charge more, because they do add value.
        If I needed 10,000 units, I doubt I would think of sparkfun. But if I need < 10 units to finish a board or project, I'm just as happy getting them from SparkFun as going around shopping for the best deals. When shipping costs are taken into account, it's easy to get these parts thrown into the same box with my SpeakJet shield, and still come out ahead.
        So carry on, SparkFun!

      • argon99 / about 12 years ago / 2

        Rare earth metals are not that rare. There are a number of places that could be mined. But nobody but the Chinese has bothered to mine them. This gave China the power to set their own price. It's just business son.

      • ccddave / about 13 years ago / 1

        I actually agree with razburn and Ed to some degree. I do my best to buy American when available. At the same time I like to save a buck if so if I order from Jameco, I may ad a couple of parts that are indeed cheaper than Sparkfun. At the same time I will do the same when ordering from Sparkfun and throw in a couple of other parts I needed even though more expensive. I enjoy doing business with these guys and the info they have here makes supporting them worthwhile.

  • ferdna / about 14 years ago / 3

    what is the thickness of the pins?

    • Member #229494 / about 13 years ago / 1

      It is probably 22 gauge, as that is the thickness of breadboard wire. The diameter of 22 gauge wire is 0.0254 inches. Source:

  • yan_g / about 12 years ago / 2

    You should specify they are "male" headers, because the search engine doesn't seem to check the pictures ;) Doesn't show up in the search results for "male header"...

  • Get them for $0.25 from here:

  • ThinkerT / about 15 years ago / 2

    Are These Breadboard compatible? I want to make PCBs that fit on my breadboard

    • NXTreme / about 15 years ago / 4

      Yes, these headers are spaced at 0.1 inches, the same spacing as on a breadboard.

    • SomeGuy123 / about 14 years ago / 2

      The spacing is compatible with breadboard, but I have found that they do not stay in the bread board very well because of their length

      • MoriFi / about 13 years ago / 1

        what the long end goes in the breadboard the short end in the cable they come off the cable first if you do it like that

        • SomeGuy123 / about 13 years ago / 1

          Connectors require longer pins than the short end provides.

          • chrwei / about 13 years ago / 2

            these are for soldering to pcb, not plug connectors. for plugs, you could try the long pin version and slide the plastic down some

  • Member #685090 / about 9 years ago / 1

    how long does it take for a comment to show up?

  • c.burgess.7 / about 9 years ago * / 1

    How do you solder these things? the solder just keeps beading up and falling off, it's not sticking or anything, it's like two magnets repelling eachother.

    UPDATE: After reviewing a few videos, i realized my error and everything is now on nice and snug.

  • radmeck / about 10 years ago / 1

    Pretty sure these are made by 4UCON: 00834 Datasheet


  • Member #371254 / about 12 years ago / 1

    I this recommended for a shield

  • Member #192488 / about 12 years ago / 1

    I got on of these with the SparkFun Inventor's kit (as I'm just starting with hobby electronics) and felt like an idiot for not realizing how it's supposed to be used. Fortunately, there's a nice Scotsman on YouTube who can provide de-idiotification:

  • JGuthridge / about 12 years ago / 1

    Any chance of finding just the black nylon spacer in the middle of the header?

    I recently saw a Parallax LCD kit with two rows of the black spacers between the two PCBs and wish I had been able to do that when I put together my SparkFun Serial Enabled LCD kit.

  • robFOREE / about 12 years ago / 1

    These do not fit into breadboard sold here PRT-00137, where can I find headers that do?

  • Ed Hartnett / about 13 years ago / 1

    Once I have, say, 4 pins sticking out of my board, where do I get the parts to make a connector that I can plug into my board?

  • Jesse214 / about 13 years ago * / 1

    I use these headers all the time. As mentioned, a larger pack for $1.50 would be more reasonable... at least several at that price. I honestly don't buy them here. I only pay $0.19 each for these 40-pin headers (packs of 10 for $1.90). But SparkFun makes it sooo easy to buy everything at once... so it's a trade-off! ;-)

  • Member #196377 / about 13 years ago / 1

    oh, you want it for $1? here:

    • BB / about 13 years ago / 2

      Nice. I'll probably do some of my shopping there since I don't care about such things as ROHS compliance for hobby work.

      • BB / about 13 years ago / 1

        Follow up to this: got these headers from Pololu and as far as I can tell they're exactly the same.

  • Member #170896 / about 13 years ago / 1

    These really should be cheaper.
    A buck at most...

    • SomeGuy123 / about 13 years ago / 1

      I'm guessing you've never shopped at mouser or digikey before. This is actually a really good deal.

      • guitardude / about 13 years ago / 1

        I agree. Headers with gold finish on both ends of the plastic are pretty rare and you won't find them cheaper on digikey or mouser. If you want non-ROHS tin headers they can be found for cheaper. As you pointed out, a good deal (for quality headers)

        • PointyOintment / about 11 years ago * / 1

          What's the advantage of gold plating for headers? I know of a site that sells a 10-pack (400 pins) for $2.90, but I don't know if those are gold-plated or not. Probably not.

          • MikeGrusin / about 11 years ago / 1

            With gold plating, you don't have to worry about oxidation causing intermittent connections or being hard to solder. Everything just works. (And in regards to another comment, to each their own, but I personally prefer to use the highest-quality parts when I'm prototyping as there can be enough problems to deal with without having to worry about simple things like connection integrity.)

            It's also no secret that you can get many of our products elsewhere cheaper. Much of our effort goes into our engineered products, but we also like to carry essential small parts like this so that you can buy everything from one place instead of having to go to multiple companies. I personally go through at least one of these a week, so I'm glad we stock them.

        • Member #222203 / about 13 years ago / 1

          How about offering the tin headers also? I'd pay $0.50 to $1. I don't need gold pins in a prototype. Certainly not at this price.

  • LucasZ / about 14 years ago / 1

    I bought 10 of this in a eletronics store at Brazil, and cost me $1

  • Ken7 / about 14 years ago / 1

    What is the drill size for these? I have a board mill and I'm not sure what kind of bit I should buy. Help!

    • JohnGalt / about 11 years ago / 1

      Generally they are .025 square pins for headers such as these. computing the square root of the sum of the squares gives about .0353..... so fudge a bit and call it .040 for hole diameter...... (or just use the library part in eagle from the sparkfun eagle library - then get the size bits eagle calls for)

Customer Reviews

4.6 out of 5

Based on 20 ratings:

Currently viewing all customer reviews.

1 of 1 found this helpful:

Endless Utility

I love these headers, they cut very easily with wire cutters. Though I always manage to end up with an odd single header whenever I buy a strip.

3 of 3 found this helpful:

The duct tape of electronics

You can never have too many break-away headers. Solder these to a bare breakout board for easy breadboarding. Or use it with jumper wires to easily attach and re-attach components within your project.

1 of 1 found this helpful:

Very useful parts

Using it for homemade connectors (and more) since it doesn't break on itself, it makes a nice clean break using cutters, the metal pins can be bent or removed from the plastic casing with pliers if needed, great purchase and I'll order more for sure.

1 of 1 found this helpful:


Use an xacto knife for a perfectly clean break every time.

2 of 2 found this helpful:

You can never have too many of these. AAMOF, I need some that are long on both ends more often than expected too.

1 of 1 found this helpful:

As expected

Good quality shipped fast.

1 of 1 found this helpful:

Break Away Headers

They are great...what else can I say.

1 of 1 found this helpful:

Break Away Headers

They are great...what else can I say.

3 of 3 found this helpful:

Yes, break away headers

Pros: Very straight Many breakaway such header wow Cons: Solder reasonably quickly, too much heat will melt the plastic.

1 of 1 found this helpful:

Easy to use, high quality pins

Very easy to break apart cleanly and the pins are really good quality. Good product for the price.

1 of 1 found this helpful:

They are effective headers

They are headers. Spacing seemed good. Metal very... conductive of electricity, which is good. I mean, they are headers. What is there to say?

2 of 2 found this helpful:

Sparkfun suggested I review these.

I'm not entirely sure why they need a review. They're headers. They snap with a pair of pliers and some pressure. They're both extremely useful and entirely unexciting to describe.

Works great

Simple product that just does its job!

Nice pins!

If you need straight break away headers, just buy these!

Have to have item

I always keep a good supply of these headers at my workbench. Easiest way I know to make quick connections between custom boards and prototypes.

Headers headers everywhere.

Always have a wide selection of pins available. Never know when you'll need to replace a few, or just one. Either way these are a must have.

Good Headers

Haven't had any issues, easy to use. Good product.