Xem Studiomeasured geometry

Library › RC cars › 12 mm RC wheel hex

Hexagon 12 mm across flats, 1 mm reference thickness (hub length not published)

Hexagon 12 mm across flats, 1 mm reference thickness (hub length not published)

Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, CC BY 4.0 (credit "Xem Studio")

Dimensions

dimensionAcross flats
value12 mm
Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
Set it up →

From the full sheet

12 mm RC wheel hex: every size, notes, mating features and sources. What size is a 12 mm RC wheel hex and which cars use it?