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Sanwa OBSF 30mm Pushbuttons Dark Blue

$2.95 (USD)
0.36 Ounces
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16 unit(s)

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  • Product Description

    The SANWA OBSF series is considered the standard in high-quality Japanese arcade and commercial joystick pushbuttons. These buttons are compatible with the MadCatz line of FightSticks, Qanba FightSicks and Hori Fightsticks.  These buttons are specifically for custom joysticks that use a metal control panel.

    Sanwa's 30mm button snap right into most configurations, and offer the best reaction time, smoothest and quietest of any button.  The buttons are available in a variety of colors for great customization. Additionally, you can swap out the button plungers for even more customization.

    Bundle with Silencer 30mm Foam Washers and Save!

    Silencer Foam Washer Silencer installed in Sanwa pushbutton
    Silencer installed into Seimitsu screwbutton Silencer installed in Seimitsu PS-15 Low Profile (tabs snipped to fit)

    Silencer is our 1mm-thick foam washer that helps to dampen the loud sounds common with tapping on the button plunger.  It conforms to the internal housing of many Sanwa or Seimitsu-style 30mm pushbuttons.

    Known compatibility:


    Click "Add to Order" to save 40% off retail of a Silencer foam washer for each button you purchase. 

    Silencer Installation

    installing the Silencer foam pads into a Sanwa or Seimitsu pushbutton is straightforward.  Place the washer - plastic film side down - into the button housing.  Align the small tabs so that they stick out of the holes on each side of the housing.  For Seimitsu PS-15, and Hori Hayabusa low profile pushbuttons, snip the tabs off with scissors and place into the housing.

    24 vs 30mm

    When processing orders, a frequent mistake we found among new players is choosing the wrong size for action buttons, such as punch and kick.

    Within the fighting game genre, Japanese arcade buttons commonly consist of two diameter sizes: 24 millimeter and 30 milllimeter (mm). In most configurations, 30mm represents your action button.  These are front facing, appearing most prominent on your Fightstick control panel.  Option button, such as "Start", "Select", or more recently "Option", "Touch", or "Share" are usually 24mm.

    UPDATE: Owners of Neo Geo AES Joysticks will need 24mm pushbuttons instead of 30mm (Thanks SRK's DEZALB)

    Below is a visual representation of a common Fightstick control panel.  Throughout this article, we will mark 24mm in green, and 30mm in Orange.

    Common joystick configuration

    Checking the Proper Size

    button-30mm.pngAnother way that players can misinterpret the pushbutton size is by measuring the pushbutton plunger.  Have a look at the diagram at right.

    The plunger - the part that you press down to represent an input - is 25mm or a bit smaller in most 30mm pushbuttons.  Often this leads to the conclusion that one needs a 24mm button and not 30mm.

    Similarly measuring the button rim can lead to confusion, as it is intentionally larger than the button hole it is placed in.  You don't want to use these measurements.  Instead, review the button housing diameter, or the hole the button will be placed in.  You can do this with a caliper - a digital caliper is often quite helpful for this and other arcade-related projects.

    Control Panel Configuration

    Most Fightsticks from MadCatz, Hori, Qanba, and similar will use these two sizes.  How the buttons are used will depend on the model joystick that you own. Over time, we'll provide example configurations for specific popular Fightstick models and arcade cabinets using the color key for 24mm (green) and 30mm (orange).  We'll also expand the key for future models if another size is introduced, and we offer for sale.


    24vs30mm Hitbox Example
    HRAP and Qanba Model Configuration
    MadCatz Model Configuration
    Qanba Q1 and Mayflash/Venom Model Configuration

  • Product Reviews


    Write A Review

    1. Awesome!

      Exactly what I needed. Quality as expected. Color is basically blurple. Matches the picture. on Aug 24th 2022

    2. Just the color I wanted!

      Sanwa OBSF and OBSFS buttons are the best you can get in my opinion. I have the all black OBSF buttons. The all white OBSFS buttons. So I actually just ordered this color but just in the OBSF Dark Blue plunger as I already have a set of both white and black rims. They are all mix and match so same thing. I took the dampening foam pad out of the white buttons. And I used my black rims and these dark blue plungers to make black/dark blue silent buttons. Essentially they are black/dark blue OBSFS buttons now. Anyway my point is even tho I didn’t order the entire unit here I have the same color plunger and the color looks amazing. It’s a dark blueish/purple color which is what it looked like to me upon ordering them. I have the SFV Razer Panthera so I wanted a color to match the artwork which these do perfectly. The other reviewer gave two stars because he ordered buttons, that had photos, and he ordered them TWICE! It wasn’t an accident. Then after seeing them in person orders more and is surprised they are the same color... Because he doesn’t like the color of a button that HE ordered TWICE he rates them 2 stars... AFTER they even said he could return them for any other color.... Ok I don’t want to be rude but what an IDIOT!!! DARK BLUE is the name. A dark blue is always kinda purple looking. That’s what makes it a dark blue. If you want to rate something bad because the product or services sucks that’s fine. But to give a product you ordered twice I might add with a chance to return them two stars because you dislike the color is a bunch of crap and just plain ignorant. All I can say is if you want dark blue buttons these are indeed dark blue. They look great and Sanwa is the best! Also remember you can mix and match any rims and plunger from any of the OBSF and OBSFS buttons. Just have to swap the foam pad around if you want to keep them quiet. So currently this color button is sold out but you can order the same color plunger and use/order the same color rim or any color rim you would like. on May 5th 2020

    3. Cant go wrong

      If you are looking for arcade buttons, you cant go wrong with sanwa on Jan 16th 2020

    4. not blue, rather purple

      Update from FA: Sanwa's "Dark Blue" has always remained an odd color that is tough to assess. They officially call it "Dark Blue". Also please note that camera shots try to reproduce with accuracy, but is limited by color temperature of the environment, lighting, and your computer's calibration settings, which can affect what you see as "blue" in the photo.


      I ordered 6 of these according to the color of the picture on the site.

      I received them and discovered they were a bit off in color, but I was eager to use them so i modded them a bit before install, so no way to return them now.

      I ordered another 4, thinking they were just a miss-pick when they filled my last order, and nope, same lame purple.

      I emailed them about it and this is part of the response:

      Unfortunately no, there wasn't a mistake the Sanwa "Dark Blue" is a purplish blue color. You are welcome to return the buttons if you would like.

      do with this info as you wish, buttons work great though, just ascetically displeasing.

      on Mar 26th 2016