Keycap Specs

About Keycap Specs

Mechanical Keyboard Keycap Profiles, PBT Plastic Wall Thickness & Stem Compatibility

Mechanical keyboard engineering guide for keycap height profiles (Cherry, OEM, SA, KAT, MT3), PBT vs ABS plastic wall thickness, and MX stem tolerances.

Editorial approach

Articles here are published under the Keycap Specs Editorial byline and are revised when the software, hardware, or vendor documentation they describe changes. Where an article relies on a specification, release note, or vendor document, it cites that source directly so you can check the original rather than take our summary of it.

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