Xem Studiomeasured geometryLibrary › Hardware › Shoulder screws ISO 7379 (metric): shoulder Ø, thread, head size…
ISO 7379 shoulder screw M12
ISO 7379 shoulder screw M12: shoulder Ø16 × 40 mm long, thread M12 × 18.4 mm (drawn as a plain Ø12 cylinder, nominal major diameter), head Ø24 × 12, 8 mm hex socket 6.6 mm deep; the 40 mm shoulder length is an example from the standard's range, head height k and socket depth t are the larger/single-source values noted on the page; no chamfers or thread neck
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
| thread d2 | M12 |
|---|---|
| pitch P, mm | 1.75 |
| shoulder Ø d1, mm (other sources) | 16 |
| head Ø d3 (max), mm | 24 |
| head height k, mm (fasten.it k max) | 12 (11) |
| hex key s, mm | 8 |
| thread length b (max), mm | 18.4 |
| socket depth t (min), mm | 6.6 |
| shoulder length l1 range, mm (fasten.it / Ganter) | 30–120 / 25–100 |
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.From the full sheet
Shoulder screws ISO 7379 (metric): shoulder Ø, thread, head size, hex key, thread length, M5 to M20: every size, notes, mating features and sources. What are the dimensions of an ISO 7379 metric shoulder screw: shoulder diameter, thread, head diameter and height, hex key size and thread length?