ISO 14405-1-2016 PDF
Name in English:
St ISO 14405-1-2016
Name in Russian:
Ст ISO 14405-1-2016
Original standard ISO 14405-1-2016 in PDF full version. Additional info + preview on request
Full title and description
Geometrical product specifications (GPS) — Dimensional tolerancing — Part 1: Linear sizes. This international standard (ISO 14405-1:2016) defines the default specification operator for linear size, a range of special specification operators for features of size (for example cylinder, sphere, circle, two parallel opposite planes), associated specification modifiers and drawing indications, and the various types of linear size (local, global, calculated and rank-order sizes).
Abstract
ISO 14405-1:2016 provides a toolbox for indicating and tolerancing linear dimensions on technical drawings and specifications. It covers local sizes (two-point, spherical, section, portion), global sizes (direct global, least-squares, maximum inscribed, minimum circumscribed, minimax, indirect global), calculated sizes (circumference, area and volume diameters) and rank‑order sizes (maximum, minimum, average, median, mid‑range, range, standard deviation). The standard also explains permitted tolerance notations (limit deviations, upper/lower limits, ISO tolerance classes) and applicable modifiers.
General information
- Status: Withdrawn (revised/replaced by a later edition published in 2025).
- Publication date: August 2016.
- Publisher: International Organization for Standardization (ISO).
- ICS / categories: 17.040.10 (Geometrical product specifications (GPS) / dimensional tolerancing).
- Edition / version: Edition 2 (ISO 14405-1:2016).
- Number of pages: 56.
Scope
This part of ISO 14405 establishes how to indicate linear sizes and their tolerances in the GPS framework. It applies to features of size such as cylinders, spheres, circles and pairs of parallel planes/lines and defines both default and special specification operators, specification modifiers, drawing indications and the acceptable forms of expressing tolerances for linear sizes. It is intended to remove ambiguity in size specification and to provide consistent rules within the ISO GPS system.
Key topics and requirements
- Definition and use of the default specification operator for linear size.
- Special specification operators for common features of size (cylinder, sphere, torus, circle, parallel planes/lines).
- Types of linear size: local, global (direct and indirect), calculated and rank‑order sizes.
- Specification modifiers and standardized drawing indications for linear sizes.
- Permitted tolerance expressions: +/− limit deviations, upper/lower limit notation, ISO tolerance class codes (ISO 286‑1), with or without modifiers.
- Guidance to ensure unambiguous communication of size characteristics within the ISO GPS system and compatibility with related GPS standards and decision rules.
Typical use and users
Engineers, designers, drafting and CAD practitioners, quality/control engineers, metrologists, standards committees and technical authors use this standard to specify and interpret linear dimensions and tolerances unambiguously on drawings and in specifications. It is applied across manufacturing, mechanical engineering, metrology labs and supply‑chain documentation where precise dimensional communication is required.
Related standards
ISO 14405-1 is part of the ISO 14405 series on dimensional tolerancing (other parts cover dimensions other than linear sizes and angular sizes). It is closely linked to other GPS and dimensional standards such as ISO 17450 (general GPS concepts and operators), ISO 14638 (GPS masterplan), ISO 8015 (fundamental rules) and ISO 14253 (decision rules). These related documents explain the broader GPS framework, operators, feature definitions and decision rules used alongside ISO 14405-1.
Keywords
GPS, dimensional tolerancing, linear sizes, feature of size, specification operator, tolerance modifiers, drawing indications, ISO 14405-1, limits of size.
FAQ
Q: What is this standard?
A: ISO 14405-1:2016 is an international standard that specifies how to indicate and tolerate linear sizes (dimensions of features of size) within the ISO GPS system.
Q: What does it cover?
A: It covers definition and use of default and special specification operators for linear sizes, types of size (local, global, calculated, rank‑order), specification modifiers, drawing indications and the acceptable forms of expressing tolerances (limit deviations, upper/lower limits, ISO tolerance classes).
Q: Who typically uses it?
A: Mechanical designers, CAD/drafting staff, manufacturing engineers, metrologists, quality/control teams and standards bodies — essentially anyone who needs to communicate or interpret precise linear dimensional requirements in product documentation.
Q: Is it current or superseded?
A: ISO 14405-1:2016 has been withdrawn and a later edition (ISO 14405-1:2025) has been published; users should reference the 2025 edition for the current, authoritative requirements.
Q: Is it part of a series?
A: Yes — ISO 14405 is a multi‑part series on dimensional tolerancing. Part 1 addresses linear sizes; other parts cover dimensions other than linear sizes and angular sizes. The series integrates with the wider ISO GPS family of standards.
Q: What are the key keywords?
A: Keywords include: linear size, feature of size, specification operator, dimensional tolerancing, GPS, tolerance modifiers, drawing indications, ISO 14405-1.