Standard thread dimensions used with bicycles

Maintenance and repairs

Maintenance and repairs

ISO standard defines dimensions of thread – by diameter and pitch. This post provides a list of standards most commonly used on bicycles, with explanation of most common use. Tools most commonly used for (un)screwing the bolts and nuts of the given standards will also be noted (also by ISO standard), for both allen (hex) and hexagonal (“standard”) wrenches.

ISO thread sizes used on bicycles, with most commonly used tools. Table 1

ISO thread sizes used on bicycles, with most commonly used tools.
Table 1

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