Tolerance | Fit

: Permanent assemblies where friction must transmit torque.

The ISO 286 Standard uses an alphanumeric code (e.g., ) to define fits. Fit Tolerance

: Rotating shafts, sliding parts, or items that need easy hand-assembly. : Permanent assemblies where friction must transmit torque

: H7/p6 (light press), H7/s6 (medium drive fit for gear hubs). Fit Tolerance

: The shaft is always larger than the hole, requiring force or thermal expansion/contraction for assembly.

: H7/g6 (precision sliding), H11/c11 (loose agricultural machinery).

: High-precision location where parts need to be snug but removable. Examples : H7/k6 (locational transition for dowel pins). 2. ISO 286 Notation System