Thread Length (HR) Calculator for bolts EN 14399-3

Andrews Fasteners Thread Length (HR) Calculator

HR Bolt to EN 14399-3:2015

Maximum bolt length = 300 mm

The values produced on this calculator are for information purposes only. They are calculated using formulas stated in the relevant standards and are provided in good faith and for guidance only. Andrews Fasteners Limited / AndFast Malaysia can not accept any liability for actions taken by third parties based on this informations.

Length X
Thread b (ref.):
Minimum thread (full thread):
Maximum thread inc. run out:
ls min:
lg max:
Version: JS/1.04.230721.14399.3.2015

When maximum thread calculated is less than/equal to minimum or equal to 0 (zero) then the bolts will be fully threaded.

Minimum sizes of the bolts, that cannot be considered as fully threaded are as follow:
M12x45, M14x55, M16x60, M18x65, M20x70, M22x75, M24x85, M27x90, M30x100, M36x120

Minimum value refers to full thread.
Maximum value refers to maximum thread including run out (incomplete thread).

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