Keycap Specs: Profiles, PBT Thickness and Stem Fit

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

Keycap Specs
Independent · 2026

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 published dimensions actually describe.

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Latest guides

Blank cream keyboard with a blue spacebar beside a tray of spare keycaps, above a row of loose caps graded by width and one flipped to show its stem

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 ch…

Cream mechanical keyboard with a blue keycap lifted off exposed switches, beside loose keycaps showing cross stems, a stabilizer wire, 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…

A blue keycap and a white keycap tilted to show their hollow undersides and stems, with a steel caliper gauging the white cap's wall thickness.

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 Row Codes and Profile Heights: What Is Documented

Latest guides

Keycap Sizes Explained: Units, Bottom Rows, Kits

How to Fix Keycap Wobble and Loose Keycaps

Keycap Wall Thickness by Material: PBT and ABS in mm