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Bike component fitment: bottom bracket, headset, seatpost, axle

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Parts ranked by thread pitch

commonly M15 x 1.5
15x100 mm front thru-axle has the highest thread pitch in the dataset, at commonly M15 x 1.5.

Which part has the highest thread pitch?

15x100 mm front thru-axle, at commonly M15 x 1.5, tops the 6 parts we hold a published thread pitch for. The full ranking is below.

#PartsThread pitch
115x100 mm front thru-axlecommonly M15 x 1.5
215x110 mm Boost front thru-axlecommonly M15 x 1.5
312x100 mm front thru-axlecommonly M12 x 1.5, though 1.0 and 1.75 are also used depending on the fork
412x142 mm rear thru-axlevaries by frame: M12 x 1.0, 1.5 or 1.75 are all in use
512x148 mm Boost rear thru-axlevaries by frame: M12 x 1.0, 1.5 or 1.75
612x157 mm Super Boost rear thru-axlevaries by frame, typically M12 x 1.0 or 1.5

Data as of 2026-09-06.

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