For Comments only Doc. No.: PG 24(1159) IS 10714(Part 24): ISO 128-24:1999 July 2009

Draft Indian Standard Technical drawings - General principles of presentation - Part 24: Lines on

mechanical engineering drawings

ICS 01.100.20 Not to be reproduced without permission Last date for receipt of comment of BIS or used as Standard is 30-09-2009 NATIONAL FOREWORD This Indian Standard (Part 24) which is identical with ISO 128-24: 1999 ‘Technical drawings – General principles of presentation – Part 24: Lines on mechanical engineering drawings’ issued by the International Organization for Standardization (ISO) will be adopted by the Bureau of Indian Standards on the recommendation of the Drawings Sectional Committee and approval of the Production and General Engineering Division Council. This Indian Standard consists of eleven parts. The other parts are as under: Part 1 Technical drawings General principles of presentation – Part 1: Introduction and index Part 20 Technical drawings – General principles of presentation – Part 20: Basic conventions for lines Part 21 Technical drawings – General principles of presentation – Part 21: Preparation of lines by CAD systems Part 22 Technical drawings – General principles of presentation – Part 22: Basic conventions and applications for leader lines and reference lines Part 23 Technical drawings – General principles of presentation – Part 23: Lines on construction drawings Part 25 Technical drawings – General principles of presentation – Part 25: Lines on shipbuilding drawings

Part 30 Technical drawings – General principles of presentation – Part 30: Basic conventions for views Part 34 Technical drawings – General principles of presentation – Part 34: Views on mechanical engineering drawings Part 40 Technical drawings – General principles of presentation – Part 40: Basic conventions for cut and sections Part 44 Technical drawings – General principles of presentation – Part 44: Sections on mechanical engineering drawings The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminology and conventions are, however, not identical to those used in Indian Standards: attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear, referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker while in Indian Standards the

current practice is to use a point (.) as the decimal marker.

In this adopted standard, reference appears to certain International Standards for which Indian Standards also exist. The corresponding Indian Standards, which are to be substituted in their respective places, are listed below along with their degree of equivalence for the editions indicated: International Standard Corresponding Indian Standard Degree of

Equivalence

ISO 128-20:1996 Technical drawings – General principles of presentation – Part 20: Basic conventions for lines

IS 10714(Part 20): 2001 Technical drawings – General principles of presentation – Part 20: Basic conventions for lines

Identical

ISO 128-22:1999 Technical drawings – General principles of presentation – Part 22: Basic conventions and applications for leader lines and reference lines

IS 10714(Part 22): 2006 Technical drawings – General principles of presentation – Part 22: Basic conventions and applications for leader lines and reference lines

do

ISO 128-30: 2001 Technical drawings – General principles of presentation – Part 30: Basic conventions for views

IS 10714(Part 30): 2006 Technical drawings – General principles of presentation – Part 30: Basic conventions for views

do

ISO 128-40: 2001 Technical drawings – General principles of presentation – Part 40: Basic conventions for cuts and sections

IS 10714(Part 40): 2006 Technical drawings – General principles of presentation – Part 40: Basic conventions for cut and sections

do

ISO 129-1: 20041) Technical drawings – Indication of dimensions and tolerances – Part 1: General principles

Doc. PG 24(1164) Technical drawings – Indication of dimensions and tolerances – Part 1: General principles

do

ISO 2203: 1973 Technical drawings – Conventional representation of gears

IS 10717:1983 Conventional representation of gears on technical drawings

do

ISO 3040-1990 Technical drawings – Dimensioning and tolerancing – Cones

IS 10718:1993 Technical drawings – Dimensions and tolerancing of cones (first revision)

do

ISO 5261: 1995 Technical drawings – Simplified representation of bars and profile sections

IS 10720:1999 Technical drawings – Simplified representation of bars and profile sections (first revision)

do

ISO 6410-1:1993 Technical drawings – Screw threads and threaded parts – Part 1: General conventions

IS 10715(Part 1): 1999 Technical drawings – Screw threads and threaded parts – Part 1 – General conventions (first revision)

do

ISO 6428: 1982 Technical drawings – Requirements for microcopying

IS 10164:1985 Requirements to execute technical drawings for microcopying (first revision)

do

ISO 10135: 19942) Technical drawings – Simplified representation of moulded, cast and forged parts

IS 14722:1999 Technical drawings – Simplified representation of moulded, cast and forged parts

do

ISO 10578:1992 Technical drawings – Tolerancing of orientation and location –Projected tolerance zone

IS 13847:1993 Technical drawings – Tolerancing of orientation and location – Projected tolerance zone

do

1 ) Revision of ISO 129: 1985

2 ) Since revised in 2000

The concerned technical committee has reviewed the provisions of following ISO Standard referred in this adopted standard and has decided that it is acceptable for use in conjunction with this standard:

ISO Standard Title

ISO 128-50: 2001 Technical drawings – General principles of presentation – Part 50: Basic conventions for representing areas on cuts and sections

Annex A of this part of Indian Standard is for information only. Note: The technical content of document is not available on website. For details please refer ISO 128-24:1999 or contact Head Production and General Engineering Department Bureau of Indian Standards 9, B. S. Zafar Marg, New Delhi-110002 Email: pgd@bis.org.in Telephone/ fax: 011-23234819