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ISO 7379 shoulder screw M20
ISO 7379 shoulder screw M20: shoulder Ø25 × 50 mm long, thread M20 × 27.4 mm (drawn as a plain Ø20 cylinder, nominal major diameter), head Ø36 × 20, 12 mm hex socket 10 mm deep; the 50 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.
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Dimensions
| thread d2 | M20 |
|---|---|
| pitch P, mm | 2.5 |
| shoulder Ø d1, mm (other sources) | 25 (Ganter 24) |
| head Ø d3 (max), mm | 36 |
| head height k, mm (fasten.it k max) | 20 (16) |
| hex key s, mm | 12 |
| thread length b (max), mm | 27.4 |
| socket depth t (min), mm | 10 |
| shoulder length l1 range, mm (fasten.it / Ganter) | 50–120 / 50–100 |
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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?