Library › Hardware › Coupling nuts / long hex nuts: DIN 6334 M8–M36 (height 3 d) and inch…

DIN 6334 M30 long hexagon nut envelope

DIN 6334 M30 long hexagon nut envelope: hex 46 mm across flats × 90 mm high (3 × d), bore Ø30 (thread major diameter as a plain cylinder); no chamfers, no thread

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

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

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

Coupling nuts / long hex nuts: DIN 6334 M8–M36 (height 3 d) and inch rod coupling nuts 1/4 to 1 in — across flats, length + M8–M36 envelope models: every size, notes, mating features and sources. What are the dimensions of a DIN 6334 long hex nut, and how long is a 3/8-16 coupling nut?

Other sizes