Deutsches Institut fur Normung e. V.

Cycles - Screw threads used to assemble freewheels on bicycles hubs (:1989)
 N ISO 6698

Annotation

This International Standard specifies the thread profile and limits and tolerances for the screw threads used to assemble freewheels on bicycle hubs. It is based on

a) the use of the ISO basic thread profile given in ISO 68;

b) satisfactory interchangeability with the corresponding British Standard Cycle (B.S.C.) thread; this has required the use of an inch pitch (t.p.i.) N2);

c) the use of screw thread tolerance grades and tolerance positions given in ISO 965-1;

d) the use of gauges made to ISO 1502.

N2) National footnote: In ISO thread standards, the usual expression is "number of pitches per [metric unit]" rather than "turns per inch" or "t.p.i.".

Автоматический перевод:

Циклы - Винтовая резьба раньше собирала колеса свободного хода на велосипедных центрах (ISO 6698:1989)

Этот Международный стандарт определяет профиль резьбы и пределы, и допуски для винтовой резьбы раньше собирали колеса свободного хода на велосипедных центрах. Это основывается