Sanwa OBSF-24 convex style buttons. Ideal for playing fighting games, installing in candy arcade cabinets and for modifying Arcade Fight Sticks.
Research Notes
1. Overview
The OBSF-24 is the 24 mm sibling of the flagship OBSF-30 — Sanwa's standard snap-in button for Start / Select / option / auxiliary positions. Same built-in Sanwa microswitch and light crisp feel as the 30 mm, in the smaller 24 mm size that pairs with 30 mm mains. Snap-in mount, convex plunger, many colors.
2. Technical Specifications & Compatibility
See the structured specs on this page (diameter, mounting, plunger/finish, microswitch). These are standard arcade-button form factors — confirm the panel cutout (30 mm / 24 mm / 18 mm as applicable) and the snap-in vs screw-in mount for your panel thickness before ordering.
3. Sources
2 sources
- Sanwa Denshi OBSF-24 — 24 mm Snap-In Arcade Pushbutton — focusattack.com
- Sanwa Denshi OBSF-24 — 24 mm Snap-In Arcade Pushbutton — www.slagcoin.com
Specifications
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Arcade express id
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135
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Device type
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Sanwa OBSF-24 24mm snap-in arcade pushbutton (start/aux size)
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Diameter
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24mm
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Microswitch Type
The internal switch mechanism. Built-in = sealed unit. Cherry D44X = replaceable, clicky. Omron = quieter, longer life.
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Built-in Sanwa microswitch
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Mounting Type
How the button attaches to the panel. Panel mount is standard — installs through a cutout from the front.
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Snap-in
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Plunger
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Convex
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Reference pn
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OBSF-24 (AX-135 is an Arcade Express catalog ID)
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Weight kg
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0.008000
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Installation Quick Reference
Mounting: Snap-in buttons push into a 24mm hole from the top of the panel. Screw-in buttons thread from below and secure with a nut. Use 2-3mm acrylic, wood, or metal panel.
Wiring: Connect the microswitch terminals to your encoder or PCB. Common ground shared across all buttons. Quick-disconnect (0.110") terminals are standard on Japanese buttons.
Dimensions
Troubleshooting
Not responding to input
Check wiring continuity with a multimeter. Verify the contact block is properly seated. Inspect terminals for loose connections.
Quick Specs
- Arcade express id
- 135
- Device type
- Sanwa OBSF-24 24mm snap-in arcade pushbutton (start/aux size)
- Diameter
- 24mm
- Microswitch Type
- Built-in Sanwa microswitch
- Mounting Type
- Snap-in
