ISO 11381:2016
(Main)Ophthalmic optics - Spectacle frames - Screw threads
Ophthalmic optics - Spectacle frames - Screw threads
ISO 11381:2016 specifies requirements for ISO metric screw threads for use with spectacle frames. Provision is made for screw threads of the following nominal sizes: S0,8 × 0,2; M1,0 × 0,25; M1,2 × 0,25; M1,4 × 0,3; M1,6 × 0,35 and M2,0 × 0,4 and for related taps and gauges.
Optique ophtalmique — Montures de lunettes — Filetages
ISO 11381:2016 spécifie les spécifications des filetages métriques ISO destinés aux montures de lunettes. Elle concerne les filetages aux dimensions nominales suivantes: S0,8 × 0,2; M1,0 × 0,25; M1,2 × 0,25; M1,4 × 0,3; M1,6 × 0,35 et M2,0 × 0,4 ainsi que les tarauds et calibres correspondants.
General Information
- Status
- Published
- Publication Date
- 26-Sep-2016
- Technical Committee
- ISO/TC 172/SC 7 - Ophthalmic optics and instruments
- Drafting Committee
- ISO/TC 172/SC 7/WG 2 - Spectacle frames
- Current Stage
- 9093 - International Standard confirmed
- Start Date
- 07-Dec-2021
- Completion Date
- 13-Dec-2025
Relations
- Effective Date
- 20-Feb-2016
Overview
ISO 11381:2016 - Ophthalmic optics - Spectacle frames - Screw threads specifies ISO metric screw-thread requirements specifically for spectacle frames. It defines the nominal thread sizes used in eyewear (S0,8 × 0,2; M1,0 × 0,25; M1,2 × 0,25; M1,4 × 0,3; M1,6 × 0,35; M2,0 × 0,4), required classes of fit, and the related requirements for taps and gauges. The standard also gives definitions for screw length measurement by head type and a tolerance on nominal lengths.
Key topics and technical requirements
- Covered thread sizes: S0.8×0.2 and metric sizes M1.0, M1.2, M1.4, M1.6 and M2.0 with specified pitches.
- Classes of fit: Tabled classes of fit are provided for nuts and screws used in spectacle components (see standard for full table). Example designation format: M1,6 × 0,35 – 6H/6h (nut/screw fit).
- Thread standards referenced:
- S0,8 × 0,2 complies with ISO 1501 (miniature threads)
- M1.0–M2.0 sizes comply with ISO 965‑3 (tolerances for constructional metric threads)
- Taps and gauges: Screwing taps for M1.0–M2.0 shall comply with ISO 529; gauges shall comply with ISO 1502. (Note: taps for S0.8×0.2 are not specified in an international standard.)
- Screw length definitions and tolerance: The standard defines how to measure nominal length for different head types (flat, countersunk, fillister, pan/cheese) and specifies a length tolerance of 0 mm to −0.15 mm.
- Informative guidance: Annex A maps common thread sizes to their typical uses in frames (e.g., pads, joints, closing blocks).
Applications and practical value
- Ensures interchangeability of screws and threaded parts across spectacle manufacturers and suppliers.
- Supports consistent fit and function for small precision threads used in hinges, pads, joint blocks and closing mechanisms of eyewear.
- Aids designers and engineers in selecting the correct thread size, fit class and length tolerances for frame components.
- Guides manufacturers, component suppliers, toolmakers and quality inspectors on required taps, gauges, and inspection criteria for production and servicing.
- Benefits repair and maintenance workflows by standardizing replacement screws and threaded inserts.
Who should use this standard
- Eyewear frame designers and manufacturers
- Ophthalmic laboratories and repair technicians
- Fastener and miniature-thread component suppliers
- Tooling and gauge manufacturers
- Quality assurance and regulatory teams in ophthalmic optics
Related standards
- ISO 1501 - miniature screw threads
- ISO 965‑3 - metric screw thread tolerances (constructional)
- ISO 529 - short machine taps and hand taps
- ISO 1502 - gauges and gauging
Keywords: ISO 11381:2016, spectacle frames, screw threads, ophthalmic optics, ISO metric threads, taps, gauges, M1.6×0.35, thread classes, screw length tolerance.
ISO 11381:2016 - Ophthalmic optics — Spectacle frames — Screw threads Released:9/27/2016
ISO 11381:2016 - Optique ophtalmique — Montures de lunettes — Filetages Released:9/27/2016
Frequently Asked Questions
ISO 11381:2016 is a standard published by the International Organization for Standardization (ISO). Its full title is "Ophthalmic optics - Spectacle frames - Screw threads". This standard covers: ISO 11381:2016 specifies requirements for ISO metric screw threads for use with spectacle frames. Provision is made for screw threads of the following nominal sizes: S0,8 × 0,2; M1,0 × 0,25; M1,2 × 0,25; M1,4 × 0,3; M1,6 × 0,35 and M2,0 × 0,4 and for related taps and gauges.
ISO 11381:2016 specifies requirements for ISO metric screw threads for use with spectacle frames. Provision is made for screw threads of the following nominal sizes: S0,8 × 0,2; M1,0 × 0,25; M1,2 × 0,25; M1,4 × 0,3; M1,6 × 0,35 and M2,0 × 0,4 and for related taps and gauges.
ISO 11381:2016 is classified under the following ICS (International Classification for Standards) categories: 11.040.70 - Ophthalmic equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 11381:2016 has the following relationships with other standards: It is inter standard links to ISO 11381:1994. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ISO 11381:2016 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 11381
Second edition
2016-10-01
Ophthalmic optics — Spectacle frames
— Screw threads
Optique ophtalmique — Montures de lunettes — Filetages
Reference number
©
ISO 2016
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
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 . 3
5 Screwing taps . 3
6 Gauges. 3
Annex A (informative) Use and application of screw threads . 4
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsemen
...
NORME ISO
INTERNATIONALE 11381
Deuxième édition
2016-10-01
Optique ophtalmique — Montures de
lunettes — Filetages
Ophthalmic optics — Spectacle frames — Screw threads
Numéro de référence
©
ISO 2016
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2016, Publié en Suisse
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni utilisée
sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie, l’affichage sur
l’internet ou sur un Intranet, sans autorisation écrite préalable. Les demandes d’autorisation peuvent être adressées à l’ISO à
l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – Tous droits réservés
Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Références normatives . 1
3 Filetages . 1
4 Définitions et tolérances sur les longueurs des vis . 2
4.1 Vis à métaux à tête plate . 2
4.2 Vis à tête fraisée . 2
4.3 Vis à tête cylindrique fraisée bombée . 2
4.4 Vis à tête ronde bombée large ou mince . 3
4.5 Tolérance sur la longueur . 3
5 Tarauds . 3
6 Calibres . 3
Annexe A (informative) Utilisation et application des filetages . 4
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes
nationaux de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est
en général confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l’ISO participent également aux travaux.
L’ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui
concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d’approbation requis pour les différents types de documents ISO. Le présent document a été
rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir www.
iso.org/directives).
L’attention est appelée sur le fait que certains des éléments du présent document peuvent faire l’objet de
droits de propriété intellectuelle ou de droits analogues. L’ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant
les références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de
l’élaboration du document sont indiqués dans l’Introduction et/ou dans la liste des déclarations de
brevets reçues par l’ISO (voir www.iso.org/brevets).
Les appellations commerciales éventuellement mentionnées dans le présent document sont données
pour information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un
engagement.
Pour une explication de la signification d
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...