Derailleur hanger mounting screws screw size

Derailleur hanger mounting screws uses M4 screws. Details, length ranges and sources below.

M410mm, 12mmconfirmed

Elanus Parts sells 'M3x10' and 'M4x10 Flat Head Derailleur Hanger Screw' explicitly labeled by metric size for hanger/frame attachment

pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20

Replacement screws for Derailleur hanger mounting screws

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