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Sanwa OBSF 30mm Pushbuttons Black


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$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


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    1. The best buttons I've used

      I have used the Mayflash buttons, the Hayabusa buttons, and now the Sanwa button. The Mayflash buttons worked fine, but also felt kind of mushy. The Hayabusa buttons have a really nice finish to them and are otherwise great buttons. However, the Sanwa buttons I felt gave me the best results. I play a lot of Tekken and getting simultaneous inputs is extremely important for characters that have chain throws. Maybe it was just from practice, but the command history showed me hitting simultaneous button presses way more often than not. I think I prefer the Hayabusa finish compared to the Sanwa plastic, but the Sanwa buttons will likely be my go to buttons from here on out. on Oct 6th 2020

    2. amazing buttons

      good buttons. nothing really more to say on Oct 2nd 2019

    3. The Arcade Standard

      My one complain about these buttons is that they hurt when they’re bottomed out. Other than that, they’re pretty good. on Aug 25th 2019

    4. Fantastic

      These buttons are solid, they fit into their spot without any play. I use the Seimitsu PS-14-D switches because I like a little play on the top so I can rest my fingers just barely touching the buttons, instead of the almost instant fire the default switches have. The buttons are extremely consistent and reliable, they return to 0 faster upon lifting your finger than the Hayabusas do.

      With the foam inserts they about as loud as the Hayas but it's a deeper sound. The Hayabusas are shorter throw, but I like these buttons far more.
      on Apr 11th 2019

    5. Great buttons so far

      After having sticky buttons for about 6 months, It was a breath of fresh air to get some buttons that we're better than the buttons that came with my Hori Rap4. on Aug 14th 2018

    6. Great buttons

      Great response and quick travel time. A good upgrade for any stick. on Jul 30th 2018

    7. Good Buttons

      No complaints; good buttons with solid build quality and excellent performance. on Jan 24th 2018

    8. The best buttons

      What more can I say Sanwa are kings on Sep 10th 2017

    9. Cool buttons

      They get the job done, good response and good feeling. on Aug 16th 2017

    10. Love these buttons

      I bought these for my Hori rap4, they're great buttons. on Dec 25th 2016