BS EN ISO 286-2-2010 (2013) PDF

Full title and description

Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes — Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts. Adopted as BS EN ISO 286-2:2010 (published in the UK in 2013) and accompanied by a technical corrigendum issued in 2013.

Abstract

ISO 286-2:2010 provides numerical values of the limit deviations for commonly used tolerance classes for holes and shafts, calculated from the system given in ISO 286-1. It tabulates upper and lower limit deviations for holes and shafts and supplies the standard tolerance grades used in the ISO limits-and-fits system.

General information

• Status: Published / in force (BS adoption in 2013).
• Publication date: ISO edition: June 2010; BS EN publication/adoption: 31 August 2013.
• Publisher: British Standards Institution (as BS EN adoption); original international publication by ISO.
• ICS / categories: 17.040.10 (Limits and fits); 17.040.40 (Geometrical product specification — GPS).
• Edition / version: Edition 2 (ISO 286-2:2010) with Technical Corrigendum 1 (2013) adopted as BS EN ISO 286-2:2010/AC:2013.
• Number of pages: 62 (BS publication page count).

Scope

This part of the ISO limits-and-fits system gives tabulated limit deviations and standard tolerance classes for linear sizes applicable to cylindrical and parallel-surfaced features. The tables provide numerical upper and lower deviations for holes and shafts for the common tolerance grades (applied across a wide range of basic sizes). The original system covers basic sizes from about 3 mm up to 3150 mm (as in the ISO limits-and-fits series).

Key topics and requirements

• Tabulated limit deviations (upper and lower) for holes and shafts for standard tolerance grades.
• Specification of ISO tolerance grades (IT grades) and their application to basic sizes.
• Application guidance to implement the ISO system of tolerances and fits (used with ISO 286-1 which defines the fundamental principles and formulas).
• Corrigendum notes and corrections published in 2013 to clarify numerical tables and presentation.

Typical use and users

Used by mechanical designers, production engineers, metrology and quality-control laboratories, tooling and jigs designers, and standards/inspection personnel to specify, verify and interpret dimensional tolerances and fits between mating parts (holes and shafts) in metric units.

Related standards

ISO 286-1 (fundamental principles, tolerances and deviation system), ISO 286-2/Cor 1:2013 (technical corrigendum), national adoptions and EN/BS variations such as BS EN ISO 286-2:2010 and the superseded ISO 286-2:1988/earlier EN versions.

Keywords

limits and fits, tolerances, ISO code system, linear sizes, holes, shafts, tolerance grades, IT grades, geometrical product specifications (GPS), dimensional engineering, metrology.

FAQ

Q: What is this standard?

A: It is Part 2 of the ISO system of limits and fits (ISO 286-2:2010), giving the tabulated limit deviations and standard tolerance classes for holes and shafts; adopted in the UK as BS EN ISO 286-2:2010.

Q: What does it cover?

A: Numerical tables of upper and lower limit deviations for holes and shafts for the commonly used ISO tolerance grades, to be used with the principles and formulas of ISO 286-1.

Q: Who typically uses it?

A: Mechanical and manufacturing engineers, inspection and quality staff, tooling designers, metrology laboratories and anyone specifying or verifying fits between mating parts. (See "Typical use and users" above.)

Q: Is it current or superseded?

A: The ISO 286-2:2010 edition is the current published edition of Part 2; it was issued in 2010 and accompanied by a technical corrigendum in 2013. The ISO entry indicates the 2010 edition has been maintained (review/confirmation) since publication.

Q: Is it part of a series?

A: Yes — it is one part of the ISO 286 series (limits and fits). ISO 286-1 contains the fundamental principles, symbols and calculation methods; ISO 286-2 provides the numerical tables.

Q: What are the key keywords?

A: limits and fits; tolerance grades; holes; shafts; dimensional tolerances; ISO code system; GPS; IT grades; metrology.