Fit Tolerance Apr 2026
: H7/p6 (light press), H7/s6 (medium drive fit for gear hubs).
In engineering, describes the relationship between two mating parts (typically a "hole" and a "shaft") and determines how tightly or loosely they fit together. This relationship is governed by tolerances , which are the allowable variations in dimensions to account for manufacturing imperfections. 1. The Three Main Types of Fits Fit Tolerance
: Rotating shafts, sliding parts, or items that need easy hand-assembly. : H7/p6 (light press), H7/s6 (medium drive fit
The ISO 286 Standard uses an alphanumeric code (e.g., ) to define fits. : H7/p6 (light press)
