Sanwa OBSJ-24, metallic convex style buttons. Ideal for playing fighting games, installing in candy arcade cabinets and for modifying Arcade Fight Sticks.
Research Notes
1. Overview
The Sanwa Denshi OBSJ-24 is a 24 mm snap-in arcade pushbutton with a metallic-finish plunger — mechanically the same as the standard OBSF-24 (same built-in Sanwa microswitch, same 24 mm start/aux size, snap-in mount), but with a metallic-look button (finishes like Gun Metal, and other metallic colors) instead of the solid matte plunger. It's the 24 mm sibling of the OBSJ-30, giving Sanwa's signature light, crisp press with a premium metallic aesthetic.
2. User Sentiment
Sanwa is the benchmark for Japanese arcade buttons; the OBSJ metallic line is prized for looks — the metallic/gun-metal finishes give a premium, understated appearance while keeping the standard OBSF-24 feel. Popular for themed/premium builds, especially matched sets with 30 mm OBSJ mains. Standard cautions: match snap-in vs screw-in mounting to the panel and confirm the 24 mm cutout.
3. Real-World Applications
Start / Select / option and auxiliary (24 mm) buttons on arcade cabinets, fight sticks, and hitbox/leverless controllers — especially premium/metallic-themed builds. Pairs with 30 mm OBSJ main buttons.
4. Technical Specifications
- Type: 24 mm snap-in arcade pushbutton, metallic-finish plunger
- Switch: built-in Sanwa microswitch (crisp/clicky) — same as OBSF-24
- Finish: metallic (e.g. Gun Metal, and other metallic colors)
- Mounting: snap-in (24 mm cutout)
- Actuation: light momentary, short travel
5. Ordering & Compatibility
Fits standard 24 mm snap-in panels; same feel/microswitch as OBSF-24, just a metallic plunger. Pairs with 30 mm OBSJ-30 mains. Sold by arcade specialists (Focus Attack, Paradise Arcade, Arcade Shock, Japanese retailers). Confirm snap-in vs screw-in and the 24 mm cutout; choose the metallic finish desired.
6. Known Issues
No reliability concerns — Sanwa quality. Practical notes: it's the standard OBSF-24 mechanism with a metallic finish (feel is identical), so choose it for aesthetics; confirm the 24 mm cutout, mounting style, and microswitch tab size. Beware clones for genuine Sanwa feel/durability.
2 sources
- Sanwa OBSJ-24 24mm metallic-finish snap-in arcade button — focusattack.com
- Sanwa OBSJ-24 24mm metallic snap-in (Gun Metal etc.) — paradisearcadeshop.com
Specifications
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Arcade express id
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687
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Device type
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Sanwa OBSJ-24 24mm metallic-finish snap-in arcade button (OBSF-24 mechanism)
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Diameter
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24mm
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Finish
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Metallic (e.g. Gun Metal)
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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 (same as OBSF-24)
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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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Reference pn
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OBSJ-24 (AX-687 is an Arcade Express catalog ID)
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Weight kg
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0.010000
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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
- 687
- Device type
- Sanwa OBSJ-24 24mm metallic-finish snap-in arcade button (OBSF-24 mechanism)
- Diameter
- 24mm
- Finish
- Metallic (e.g. Gun Metal)
- Microswitch Type
- Built-in Sanwa microswitch (same as OBSF-24)
