EN ISO 11381:2016

SLOVENSKI STANDARD
01-januar-2017
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SIST EN ISO 11381:2000
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Ophthalmic optics - Spectacle frames - Screw threads (ISO 11381:2016)
Augenoptik - Brillenfassungen - Schraubgewinde (ISO 11381:2016)
Optique ophtalmique - Montures de lunettes - Filetages (ISO 11381:2016)
Ta slovenski standard je istoveten z: EN ISO 11381:2016
ICS:
11.040.70 Oftalmološka oprema Ophthalmic equipment
21.040.10 Metrski navoji Metric screw threads
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 11381
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2016
EUROPÄISCHE NORM
ICS 11.040.70; 21.040.10 Supersedes EN ISO 11381:1996
English Version
Ophthalmic optics - Spectacle frames - Screw threads (ISO
11381:2016)
Optique ophtalmique - Montures de lunettes - Filetages Augenoptik - Brillenfassungen - Schraubgewinde (ISO
(ISO 11381:2016) 11381:2016)
This European Standard was approved by CEN on 5 September 2016.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11381:2016 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
European foreword
This document (EN ISO 11381:2016) has been prepared by Technical Committee ISO/TC 172 “Optics
and photonics” in collaboration with Technical Committee CEN/TC 170 “Ophthalmic optics” the
secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2017, and conflicting national standards shall be
withdrawn at the latest by April 2017.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN ISO 11381:1996.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 11381:2016 has been approved by CEN as EN ISO 11381:2016 without any modification.
INTERNATIONAL ISO
STANDARD 11381
Second edition
2016-10-01
Ophthalmic optics — Spectacle frames
— Screw threads
Optique ophtalmique — Montures de lunettes — Filetages
Reference number
ISO 11381:2016(E)
©
ISO 2016
ISO 11381:2016(E)
© ISO 2016, Published in Switzerland
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ii © ISO 2016 – All rights reserved

ISO 11381:2016(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Screw threads . 1
4 Definitions and tolerances on lengths of screws . 2
4.1 Flat head machine screws . 2
4.2 Countersunk head screws . 2
4.3 Fillister — countersunk head screws . 2
4.4 Pan and cheese head screws . 3
4.5 Tolerance on length .
...