Keycap Specs: Profiles, PBT Thickness and Stem Fit

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

Keycap Specs
Independent · 2026

Compact dark mechanical keyboard with blank keycaps beside loose bottom-row caps of varying widths and three flipped caps showing cross stems.

compatibility

Keycap Sizes Explained: Units, Bottom Rows, Kits

Keycap sizes in units, the 19.05 mm grid behind them, the bottom rows that break compatibility, and how to check a kit covers your board before you buy.

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Latest guides

Isometric render of blank dark keycaps, one lifted off a glowing switch stem, beside an upturned keycap, a wire stabilizer and a keycap puller.

troubleshooting

How to Fix Keycap Wobble and Loose Keycaps

Diagnose and fix a loose or wobbling keycap by checking the cap socket, switch stem, plate seating and stabil…

profiles

Keycap Row Codes and Profile Heights: What Is Documented

Decode keycap row codes across vendors, distinguish profile heights from installed height, and check what pub…

Isometric mechanical keyboard with glowing pink and magenta keycaps on a dark background.

materials

Keycap Wall Thickness by Material: PBT and ABS in mm

Compare published PBT and ABS keycap thickness in millimetres, separate wall dimensions from legend methods, …

Interactive tool

Keycap Profile & Plastic Thickness Sizer

Profile height, PBT and ABS wall thickness against acoustic character, north and south facing LED clearance, and the vendor row code your chosen row is sold under. Free, no signup, runs in your browser.

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

Keycap Sizes Explained: Units, Bottom Rows, Kits

Latest guides

How to Fix Keycap Wobble and Loose Keycaps

Keycap Row Codes and Profile Heights: What Is Documented

Keycap Wall Thickness by Material: PBT and ABS in mm