ISO 10578-1992 PDF

Full title and description

ISO 10578:1992 — Technical drawings — Tolerancing of orientation and location — Projected tolerance zone. This International Standard defines the method of indicating a projected tolerance zone on technical drawings and gives examples of indication, interpretation and functional length in an annex.

Abstract

Defines the method of tolerancing by indication of a projected tolerance zone and specifies how to indicate it on drawings; Annex A provides examples of application, interpretation and functional length. The standard was published as Edition 1 in July 1992 and has since been withdrawn and superseded by later ISO geometrical product specification standards.

General information

• Status: Withdrawn / Superseded (replaced by ISO 1101:2012 and later revisions)
• Publication date: July 1992 (Edition 1).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 01.100.20 (Mechanical engineering drawings).
• Edition / version: 1 (1992).
• Number of pages: 6 (typical bibliographic listing for the ISO edition).

Bibliographic and status details are recorded on the ISO catalogue and by national standards bodies; the entry shows Edition 1 (1992), 6 pages, ICS 01.100.20 and a withdrawn status with replacement by ISO 1101 (2012).

Scope

Specifies the principle and the method for indicating a projected tolerance zone on technical drawings when tolerances of orientation, location (and related geometrical tolerances) must apply over a functional or assembly length beyond the measured feature. The projected tolerance zone is intended for use where functional, assembly or machining conditions require the tolerance to be projected from a feature for a defined functional length.

Key topics and requirements

• Definition and graphical indication of a projected tolerance zone on drawings.
• Relations to tolerances of orientation, position and run-out (geometrical tolerancing context).
• Specification of functional (projected) length associated with the projected zone.
• Examples and interpretation guidance provided in an informative annex.
• Application guidance: use only when function, assembly or disassembly justifies the projected-zone notation.

Typical use and users

Used by designers, draughtsmen, mechanical engineers, GD&T practitioners and technical documentation authors who create or interpret engineering drawings requiring projection of geometrical tolerances over an assembly or functional length (for example threaded studs, pins, mating housings). Although ISO 10578:1992 itself is withdrawn, its content and intent are embedded in later ISO GPS/geometrical tolerancing standards, so historical drawings and legacy documentation are common reasons to consult it.

Related standards

ISO 10578:1992 has been withdrawn and its subject matter incorporated into the broader ISO geometrical product specification (GPS) family. Principal related standards include ISO 1101 (Geometrical tolerancing — tolerances of form, orientation, location and run-out), particularly the 2012 edition (and subsequent revisions), which now contains the consolidated rules on projection and related indications. National adoptions and transpositions (BS, DIN, NF, UNE, etc.) reproduce ISO 10578 historically and later reference ISO 1101.

Keywords

projected tolerance zone, projected zone, geometrical tolerancing, GD&T, tolerancing of orientation, tolerancing of location, technical drawings, ISO 10578, ISO 1101, functional length, projection.

FAQ

Q: What is this standard?

A: ISO 10578:1992 is an International Standard that defined how to indicate a projected tolerance zone on technical drawings for tolerances of orientation and location. It provided rules and examples for projection notation and interpretation.

Q: What does it cover?

A: It covers the principle and method of indicating a projected tolerance zone, how to specify the functional/projected length, and includes an annex with examples and interpretation guidance for application on engineering drawings.

Q: Who typically uses it?

A: Mechanical designers, draftspeople, quality/inspection engineers, and anyone working with GD&T and engineering drawings—especially when interpreting legacy documents or applying projection rules in design and assembly contexts.

Q: Is it current or superseded?

A: ISO 10578:1992 is withdrawn and has been superseded by ISO 1101 (2012 and later editions), which consolidates geometrical tolerancing rules including projection. For current practice, refer to the latest edition of ISO 1101 and national adoptions.

Q: Is it part of a series?

A: It is (historically) part of the ISO technical drawing / GPS literature produced by ISO/TC 213. Its subject matter now forms part of the broader ISO GPS series (e.g., ISO 1101 and related standards on geometrical product specifications).

Q: What are the key keywords?

A: Projected tolerance zone; projected zone; projection; GD&T; tolerancing of orientation; tolerancing of location; technical drawings; functional length.