AX-303

1. Overview

The Sanwa Denshi OBSN-30 is the screw-in version of Sanwa's flagship 30 mm arcade pushbutton — mechanically the same as the ubiquitous snap-in OBSF-30 but with a threaded barrel + retaining nut instead of snap-in tabs. The "N" denotes screw-in (Japanese neji). It uses Sanwa's crisp built-in microswitch (light, responsive feel) in the 30 mm main-action-button size, available in many colors. Screw-in mounting is preferred for thicker panels (wood cabinets, thick acrylic) where snap-in tabs won't grip.

2. User Sentiment

Sanwa is the benchmark for Japanese arcade buttons — the same smooth, light, responsive press as the OBSF-30, with screw-in security for thick panels. Builders choose OBSN over OBSF specifically when the panel is too thick for snap-in, or when they want a more secure, rattle-free mount. Standard care: confirm the panel thickness and the 30 mm cutout.

3. Real-World Applications

Main action buttons on arcade cabinets, fight sticks, and hitbox/leverless controllers — especially thick wood/acrylic panels where the screw-in mount is needed. Pairs with 24 mm start/aux buttons.

4. Technical Specifications

• Type: 30 mm screw-in arcade pushbutton (screw-in variant of OBSF-30)
• Switch: built-in Sanwa microswitch (crisp/clicky)
• Mounting: screw-in (threaded barrel + nut), 30 mm cutout
• Actuation: light momentary, short travel
• Colors: many

5. Ordering & Compatibility

Fits standard 30 mm cutouts; the screw-in mount suits thicker panels than the snap-in OBSF-30 can handle. Same feel/microswitch as OBSF-30; pairs with 24 mm buttons. Sold by arcade specialists (Focus Attack, Paradise Arcade, Arcade Shock, Japanese retailers). Choose OBSN (screw-in) vs OBSF (snap-in) by panel thickness; the silent equivalent is OBSFS-30 (snap-in).

6. Known Issues

No reliability concerns — Sanwa quality. Practical notes: verify the panel thickness suits screw-in, confirm the 30 mm cutout, and check the microswitch tab size matches your wiring. Beware clones for genuine Sanwa feel/durability.