Ensuring designs meet international quality standards for assembly.
(general tolerances), as ISO 286 is typically reserved for critical cylindrical features where precision fits are essential for mechanical movement. Xometry Pro Shaft and Bearing Assembly
| Part Number | Title | Status | Approximate Price (PDF) | | :--- | :--- | :--- | :--- | | | Basis of tolerances, deviations and fits | Current (Active) | ~$297.00 | | ISO 286-1:1988 | Bases of tolerances, deviations and fits | Historical (Withdrawn) | ~$110.00 | | ISO 286-2:2010 | Tables of standard tolerance classes and limit deviations | Current (Active) | ~$335.00 | | DIN EN ISO 286-2:2019 | German-language adoption of ISO 286-2 | Current (Active) | ~€135-€170 | iso 286 pdf
ISO 286 is an international standard that provides a framework for tolerancing and limits of size and form for engineering components. The standard is published by the International Organization for Standardization (ISO) and is widely used across various industries, including manufacturing, engineering, and design.
If you are looking to acquire the , it can be purchased and downloaded directly from the official ISO website or your national standardization body (such as ANSI, BSI, or DIN). Utilizing the official document ensures you are working with the most up-to-date revisions, avoiding costly machining errors caused by outdated or inaccurate third-party charts. The standard is published by the International Organization
For example, "H7" represents a hole tolerance with a fundamental deviation of "H" (meaning the lower deviation is zero) and a tolerance grade of IT7. "g6" represents a shaft tolerance with a fundamental deviation of "g" and a tolerance grade of IT6.
Establishes the relationship between mated parts (clearance, interference, or transition). Structure of the ISO 286 Standard For example, "H7" represents a hole tolerance with
ISO 286 is used daily in:
Do your components need to , lock permanently , or just align accurately ?
ISO 286 is a foundational international standard that establishes the . It provides a standardized framework of tolerances, deviations, and fits applicable to cylindrical and non-cylindrical smooth workpieces. The standard is divided into two primary parts:
The nominal size is the theoretical size of a feature specified on the engineering drawing before any tolerances are applied. For example, a 50 mm shaft has a nominal size of 50. 2. Fundamental Deviation (Letter Codes)