classe de tolérance

CONT: La précision des dimensions et des formes ainsi que l'exactitude de rotation des roulements ont été standardisées par ISO. Outre la classe de tolérances normale, il existe des classes de tolérances plus précises qui font aussi l'objet de recommandations ISO, notamment les classes P6 et P5 qui figurent dans ce catalogue.

CONT: The dimensional, form and running accuracy of rolling bearings has been standardised by ISO. In addition to normal tolerances, ISO recommendations cover closer tolerances, e.g. tolerance classes P6 and P5 for which values are given in this catalogue.
CONT: A desired fit between mating threads may be specified by giving the internal thread tolerance-class designation followed by the external thread tolerance class. The two designations are separated by a slash, as in M6 X 1 - 6H/6g.