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IS0
FOR STAND AR D I ZATl O N
INTERN AT1 ON AL ORGAN lZATl O N
ADDENDUM 1
TO
IS0
R E CO M M E N DATI O N
R 525-1966
BONDED ABRASIVE PRODUCTS - GENERAL FEATURES
DESIGNATION - RANGES OF DIMENSIONS - PROFILES
DIMENSIONS OF THE WHEEL HOLES FOR SPECIAL APPLICATIONS
AND TOLERANCES
1st EDITION
June 1969
COPYRIGHT RESERVED
The copyright of IS0 Recommendations and IS0 Standards
to IS0 Member Bodies. Reproduction of these
belongs
documents, in any country, may be authorized therefore only
by the national standards organization of that country, being
a member of ISO.
For each individual country the only valid standard is the national standard of that country.
Printed in Switzerland
Also issued in French and Russian. Copies to be obtained through the national standards organizations.
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BRIEF HlSTORY
Addendum 1, Dimensions of the wheel holes for special applications and tolerances, to IS0 Recommendation
R 525 -1966, Bonded abrasive products ~ General features - Designation - Ranges of dimensions ~ Profiles, was
drawn up by Technical Committee iSO/TC 29, Small tools, the Secretariat of which is held by the Association Fran-
çaise de Normalisation (AFNOR).
The IS0 Recommendation R 525-1966 has been completed by the addition of two hole dimensionsd (dimen-
sions for special applications), and by the tolerances to be assigned for wheel holes. Work on this question led to the
adoption of a Draft IS0 Recommendation.
In July 1968, this Draft 1SO Recommendation (No. 1590) was submitted to all the IS0 Member Bodies for
enquiry. It was approved, subject to a few modifications of an editorial nature, by the following Member Bodies :
Australia Ireland Sweden
Austria lsrael Switzerland
Belgium Italy Thailand
Chile Japan Turkey
Czechoslovakia Netherlands U.A.R.
France Poland United Kingdom
Germany Portugal U.S.A.
Hungary South Africa, Rep. of U.S.S.R.
India Spain Yugoslavia
No Member Body opposed the approval of the Draft.
This Draft IS0 Recommendation was then submitted by correspondence to the IS0 Council, which decided,
in June 1969, to accept it as ADDENDUM 1 to IS0 RECOMMENDATlON R 525-1966.
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ISO/R 525-1966/Add. 1 - 1969 (E)
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