ISO 6696:1989 Preview
Cycles -- Screw threads used in bottom bracket assemblies
This standard was last reviewed and confirmed in 2013. Therefore this version remains current.
Specifies the thread profile and limits and tolerances for the screw threads used to assemble bottom bracket cups to bottom brackets on bicycles. It is based on the use of the ISO basic thread profile, satisfactory interchangeability with the corresponding B.S.C. thread, the use of screw thread tolerance grades and tolerance positions and the use of gauges made to ISO 1502.
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