About Keycap Specs
Mechanical Keyboard Keycap Profiles, PBT Plastic Wall Thickness & Stem Compatibility
What this site covers
Keycap Specs is the dimensional reference behind keycap choice: profile heights row by row, wall thickness by material and moulding method, and the stem tolerances that decide whether a cap fits a switch at all.
Each dimensional claim belongs with the article that explains its source and limits. Start with keycap sizes and mount spacing, row codes and profile heights, or socket fit and keycap wobble. The wall-thickness reference records product-specific figures for PBT and ABS.
- Published profile dimensions and the measuring basis behind a height figure
- Vendor row codes, and why an R1 cap from two vendors can be opposite ends of the board
- Keycap sizes in units and bottom-row kit coverage
- Space bar widths and stabiliser mount positions
- MX socket and switch-stem documentation, fit and loose-cap diagnosis
- Product-specific PBT and ABS wall thickness and moulding methods
4 articles are published so far. New ones are announced on the RSS feed.
How these articles are produced
Articles here are researched from primary sources: vendor and project documentation, published standards and specifications, research papers and preprints, and measurements published by whoever took them. Drafts are produced with AI assistance and then edited against those cited sources before anything is published.
No article on this site is based on first-hand testing in a private lab, and nothing here should be read as a measurement report of its own. Where a number appears, it comes from a source that is named, so you can check the original instead of taking this site's word for it.
Everything is published under a single editorial byline. That byline is a publishing identity for the site, not a claim about a named individual, and it does not carry professional credentials.
Corrections
A useful correction identifies the article, the disputed statement and the supporting source, including the product or document revision when available. Substantive revisions should update the explanation and its source together. The editorial desk policy explains how documented specifications and community measurements are distinguished.
How this site is funded
Some articles carry Amazon affiliate links, which may earn this site a commission if you buy through them. They cost you nothing extra, they never change which product an article recommends, and any article containing one says so at the top. There are no sponsored posts, no display advertising and no paid placements. Full detail is on the disclosure page.
Publishing identity
Site: keycapspecs.com
Published by: Keycap Specs Editorial
See also the privacy policy, the terms of use, and the editorial disclosure.