This part of ISO 1797 specifies shanks of dental rotary instruments made of plastics materials and gives measurement methods for the verification of the dimensions. A quality requirement is added in order to ensure a high quality level.

Subclauses 4.6 and 4.7 do not apply to disposable (single-use) instruments.

Shanks made of plastics materials are designed for use at speeds less than 5 000 r/min.