ISO 8488:1986 Preview
Cycles -- Screw threads used to assemble head fittings on bicycle forks
This standard was last reviewed and confirmed in 2018. Therefore this version remains current.
Specifies details of the screw threads used to assemble heads, i.d. fittings, on bicycle fork steering columns. The basic thread profile is that of ISO 68; the tolerance grades and tolerance positions are in accordance with ISO 965-1; the gauging system is that specified in ISO 1502. These threads are interchangeable with the corresponding B.S.C. thread.
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