Skip to content
Please enter a keyword to search

  • ISO 9139:1998

    Current The latest, up-to-date edition.

    Aerospace — Nuts, plain or slotted (castellated) — Procurement specification

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English, French

    Published date:  17-12-1998

    Publisher:  International Organization for Standardization

    Add To Cart

    Abstract - (Show below) - (Hide below)

    This International Standard specifies the required characteristics for metric plain or slotted (castellated) nuts, with MJ threads according to ISO 5855-2, for use in aerospace construction.

    It is applicable to nuts as defined above, provided that reference is made to this International Standard in the relevant definition document.

    General Product Information - (Show below) - (Hide below)

    Committee ISO/TC 20/SC 4
    Development Note Also numbered as BS A342(1999) (11/2005)
    Document Type Standard
    Publisher International Organization for Standardization
    Status Current

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS EN 3228:2010 Aerospace series. Nuts, hexagonal, plain, reduced height, normal across flats, in steel, cadmium plated. Classification: 900 MPa (at ambient temperature)/235°C
    I.S. EN 2852:2010 AEROSPACE SERIES - NUTS, HEXAGONAL, PLAIN, NORMAL HEIGHT, NORMAL ACROSS FLATS, HEAT RESISTING STEEL PASSIVATED - CLASSIFICATION: 1100 MPA/650 DEGREES C
    I.S. EN 2869:2009 AEROSPACE SERIES - NUTS, HEXAGONAL, SLOTTED/CASTELLATED, NORMAL HEIGHT, NORMAL ACROSS FLATS, IN HEAT RESISTING STEEL, PASSIVATED - CLASSIFICATION: 1100 MPA (AT AMBIENT TEMPERATURE)/650 DEGREES C
    I.S. EN 3227:2010 AEROSPACE SERIES - NUTS, HEXAGONAL, PLAIN, NORMAL HEIGHT, NORMAL ACROSS FLATS, IN STEEL, CADMIUM PLATED, LEFT HAND THREAD - CLASSIFICATION: 1100 MPA (AT AMBIENT TEMPERATURE)/235 DEGREE C
    ISO 12268:1997 Aerospace Nuts, hexagonal, plain, reduced height, reduced across flats, with MJ threads, classifications: 450 MPa (at ambient temperature)/425 degrees C, 600 MPa (at ambient temperature)/235 degrees C, 600 MPa (at ambient temperature)/315 degrees C, 600 MPa (at ambient temperature)/650 degrees C, 900 MPa (at ambient temperature)/235 degrees C, 900 MPa (at ambient temperature)/730 degrees C and 1 100 MPa (at ambient temperature)/600 degrees C Dimensions
    PREN 2811 : 200P1 AEROSPACE SERIES - NUTS, HEXAGON, SLOTTED/CASTELLATED IN STEEL CADMIUM PLATED - CLASSIFICATION: 1100 MPA/235 DEGREES C
    PREN 2922 : 200P3 AEROSPACE SERIES - NUTS, HEXAGON, PLAIN, REDUCED HEIGHT, REDUCED ACROSS FLATS, IN HEAT RESISTING STEEL, PASSIVATED, LEFT HAND THREAD - CLASSIFICATION: 600 MPA (AT AMBIENT TEMPERATURE)/650 DEGREES C
    05/30128671 DC : DRAFT FEB 2005 ISO 8279 - AEROSPACE - NUTS, HEXAGONAL, PLAIN, NORMAL-HEIGHT, NORMAL ACROSS FLATS, WITH MJ THREADS, CLASSIFICATIONS: 600 MPA (AT AMBIENT TEMPERATURE)/120 DEGREE C, 600 MPA (AT AMBIENT TEMPERATURE)/235 DEGREE C, 900 MPA (AT AMBIENT TEMPERATURE)/425 DEGREE C, 1100 MPA (AT AMBIENT TEMPERATURE)/235 DEGREE C, 1100 MPA (AT AMBIENT TEMPERATURE)/315 DEGREE C, 1100 MPA (AT AMBIENT
    PREN 3230 : 200P2 AEROSPACE SERIES - NUTS, HEXAGON, SLOTTED/CASTELLATED, REDUCED HEIGHT, NORMAL ACROSS FLATS, IN STEEL, CADMIUM PLATED - CLASSIFICATION: 900 MPA (AT AMBIENT TEMPERATURE)/235 DEGREES C
    PREN 2876 : 200P1 AEROSPACE SERIES - NUTS, HEXAGON, PLAIN, REDUCED HEIGHT, NORMAL ACROSS FLATS, IN ALUMINIUM ALLOY, ANODIZED - CLASSIFICATION: 450 MPA (AT AMBIENT TEMPERATURE)/120 DEGREES C
    PREN 3228 : 200P1 AEROSPACE SERIES - NUTS, HEXAGON, PLAIN, REDUCED HEIGHT, NORMAL ACROSS FLATS, IN STEEL, CADMIUM PLATED - CLASSIFICATION: 900 MPA (AT AMBIENT TEMPERATURE)/235 DEGREES C
    PREN 2809 : 200P2 AEROSPACE SERIES - NUTS, HEXAGON, SLOTTED/CASTELLATED, REDUCED HEIGHT, NORMAL ACROSS FLATS, IN HEAT RESISTING STEEL, SILVER PLATED - CLASSIFICATION: 900 MPA (AT AMBIENT TEMPERATURE)/650 DEGREES C
    BS A 319:1997 Nuts, hexagonal, plain, reduced height, reduced across flats, with MJ threads, classifications: 450 MPa (at ambient temperature)/425°C, 600 MPa (at ambient temperature)/235°C, 600 MPa (at ambient temperature)/315°C, 600 MPa (at ambient temperature)/650°C, 900 MPa (at ambient temperature)/235°C, 900 MPa (at ambient temperature)/730°C and 1100 MPa (at ambient temperature)/600°C. Dimensions
    BS ISO 8279:2008 Aerospace. Nuts, hexagonal, plain, normal height, normal across flats, with MJ threads, classifications: 600 MPa (at ambient temperature)/120 °C, 600 MPa (at ambient temperature)/235 °C, 900 MPa (at ambient temperature)/425 °C, 1100 MPa (at ambient temperature)/ 235 °C, 1100 MPa (at ambient temperature)/315 °C, 1100 MPa (at ambient temperature)/650 °C, 1210 MPa (at ambient temperature)/730 °C, 1250 MPa(at ambient temperature)/235 °C and 1550 MPa (at ambient temperature)/600 °C.\'
    BS A 343:1999 Nuts, plain or slotted (castellated). Test methods
    NF EN 3229 : 2010 AEROSPACE SERIES - NUTS, HEXAGONAL, PLAIN, REDUCED HEIGHT, NORMAL ACROSS FLATS, IN STEEL, CADMIUM PLATED, LEFT HAND THREAD - CLASSIFICATION: 900 MPA (AT AMBIENT TEMPERATURE)/235 DEGREES C
    NF EN 2852 : 2010 AEROSPACE SERIES - NUTS, HEXAGONAL, PLAIN, NORMAL HEIGHT, NORMAL ACROSS FLATS, HEAT RESISTING STEEL PASSIVATED - CLASSIFICATION: 1100 MPA/650 DEGREES C
    PREN 3227 : 200P1 AEROSPACE SERIES - NUTS, HEXAGON, PLAIN, NORMAL HEIGHT, NORMAL ACROSS FLATS, IN STEEL, CADMIUM PLATED, LEFT HAND THREAD - CLASSIFICATION: 1 100 MPA (AT AMBIENT TEMPERATURE)/235 DEGREES C
    PREN 3742 : 200P2 AEROSPACE SERIES - NUTS, HEXAGONAL, SLOTTED/CASTELLATED, REDUCED HEIGHT, REDUCED ACROSS FLATS, IN HEAT RESISTING STEEL, PASSIVATED - CLASSIFICATION: 600 MPA (AT AMBIENT TEMPERATURE)/650 DEGREES C
    DIN EN 2923:1997-02 (Draft) AEROSPACE SERIES - NUTS, HEXAGON, PLAIN, REDUCED HEIGHT, REDUCED ACROSS FLATS, IN HEAT RESISTING STEEL, SILVER PLATED - CLASSIFICATION: 600 MPA (AT AMBIENT TEMPERATURE)/425 DEGREE C
    BS EN 3227:2010 Aerospace series. Nuts, hexagonal, plain, normal height, normal across flats, in steel, cadmium plated, left hand thread. Classification: 1100 MPa (at ambient temperature)/235°C
    I.S. EN 3228:2010 AEROSPACE SERIES - NUTS, HEXAGONAL, PLAIN, REDUCED HEIGHT, NORMAL ACROSS FLATS, IN STEEL, CADMIUM PLATED - CLASSIFICATION: 900 MPA (AT AMBIENT TEMPERATURE)/235 DEGREES C
    BS EN 3226:2009 Aerospace series. Nuts, hexagon, plain, normal height, normal across flats, steel, cadmium plated. Classification: 1100 MPa/235°C
    BS A 318:1997 Nuts, hexagonal, slotted (castellated), reduced height, reduced across flats, with MJ threads, classifications. 450 MPa (at ambient temperature)/425°C, 600 MPa (at ambient temperature)/235°C, 600 MPa (at ambient temperature)/315°C, 600 MPa (at ambient temperature)/650°C, 900 MPa (at ambient temperature)/235°C, 900 MPa (at ambient temperature)/730°C and 1100 MPa (at ambient temperature)/600°C. Dimensions
    BS EN 2869:2009 Aerospace series. Nuts, hexagonal, slotted/castellated, normal height, normal accross flats, in heat resisting steel, passivated. Classification: 1100 MPa (at ambient temperature) / 650°C
    NF EN 3228 : 2010 AEROSPACE SERIES - NUTS, HEXAGONAL, PLAIN, REDUCED HEIGHT, NORMAL ACROSS FLATS, IN STEEL, CADMIUM PLATED - CLASSIFICATION: 900 MPA (AT AMBIENT TEMPERATURE)/235 DEGREES C
    BS A 317:1997 Nuts, hexagonal, plain, normal height, normal across flats, with MJ threads, classifications. 600 MPa (at ambient temperature)/120°C, 600 MPa (at ambient temperature)/235°C, 900 MPa (at ambient temperature)/425°C, 1100 MPa (at ambient temperature)/235°C, 1100 MPa (at ambient temperature)/315°C, 1100 MPa (at ambient temperature)/650°C, 1210 MPa (at ambient temperature)/730°C, 1250 MPa (at ambient temperature)/235°C and 1550 MPa (at ambient temperature)/600°C. Dimensions
    I.S. EN 3229:2009 AEROSPACE SERIES - NUTS, HEXAGONAL, PLAIN, REDUCED HEIGHT, NORMAL ACROSS FLATS, IN STEEL, CADMIUM PLATED, LEFT HAND THREAD - CLASSIFICATION: 900 MPA (AT AMBIENT TEMPERATURE)/235 DEGREE C
    DIN EN 2922:1997-02 (Draft) AEROSPACE SERIES - NUTS, HEXAGON, PLAIN, REDUCED HEIGHT, REDUCED ACROSS FLATS, IN HEAT RESISTING STEEL, PASSIVATED, LEFT HAND THREAD - CLASSIFICATION: 600 MPA (AT AMBIENT TEMPERATURE)/650 DEGREES C
    NF EN 3227 : 2010 AEROSPACE SERIES - NUTS, HEXAGONAL, PLAIN, NORMAL HEIGHT, NORMAL ACROSS FLATS, IN STEEL, CADMIUM PLATED, LEFT HAND THREAD - CLASSIFICATION: 1100 MPA (AT AMBIENT TEMPERATURE)/235 DEGREES C
    PREN 2868 : 200P1 AEROSPACE SERIES - NUTS, HEXAGONAL, SLOTTED/CASTELLATED, NORMAL HEIGHT, NORMAL ACROSS FLATS, IN HEAT RESISTING STEEL, SILVER PLATED - CLASSIFICATION: 1 100 MPA (AT AMBIENT TEMPERATURE)/650 DEGREES C
    PREN 3229 : 200P1 AEROSPACE SERIES - NUTS, HEXAGON, PLAIN, REDUCED HEIGHT, NORMAL ACROSS FLATS, IN STEEL, CADMIUM PLATED, LEFT HAND THREAD - CLASSIFICATION: 900 MPA (AT AMBIENT TEMPERATURE)/235 DEGREES C
    UNI EN 2852 : 2011 AEROSPACE SERIES - NUTS, HEXAGONAL, PLAIN, NORMAL HEIGHT, NORMAL ACROSS FLATS, HEAT RESISTING STEEL PASSIVATED - CLASSIFICATION: 1100 MPA/650 DEGREES C
    UNI EN 3227 : 2011 AEROSPACE SERIES - NUTS, HEXAGONAL, PLAIN, NORMAL HEIGHT, NORMAL ACROSS FLATS, IN STEEL, CADMIUM PLATED, LEFT HAND THREAD - CLASSIFICATION: 1100 MPA (AT AMBIENT TEMPERATURE)/235 DEGREES C
    DIN EN 2809:2001-12 AEROSPACE SERIES - NUTS, HEXAGON, SLOTTED/CASTELLATED, REDUCED HEIGHT, NORMAL ACROSS FLATS, IN HEAT RESISTING STEEL, SILVER PLATED - CLASSIFICATION: 900 MPA (AT AMBIENT TEMPERATURE)/650 DEGREES C
    BS EN 2809:2001 Aerospace series. Nuts, hexagon, slotted/castellated, reduced height, normal across flats, in heat resisting steel, silver plated. Classification. 900 MPa (at ambient temperature)/650°C
    EN 2869 : 2009 AEROSPACE SERIES - NUTS, HEXAGONAL, SLOTTED/CASTELLATED, NORMAL HEIGHT, NORMAL ACROSS FLATS, IN HEAT RESISTING STEEL, PASSIVATED - CLASSIFICATION: 1100 MPA (AT AMBIENT TEMPERATURE)/650 DEGREES C
    ONORM EN 3228 : 2010 AEROSPACE SERIES - NUTS, HEXAGONAL, PLAIN, REDUCED HEIGHT, NORMAL ACROSS FLATS, IN STEEL, CADMIUM PLATED - CLASSIFICATION: 900 MPA (AT AMBIENT TEMPERATURE)/235 DEGREES C
    BS EN 3229:2009 Aerospace series. Nuts, hexagonal, plain, reduced height, normal across flats, in steel, cadmium plated, left hand thread. Classification: 900 MPa (at ambient temperature)/235°C
    DIN EN 2924:1997-02 (Draft) AEROSPACE SERIES - NUTS, HEXAGON, PLAIN, REDUCED HEIGHT, REDUCED ACROSS FLATS, IN HEAT RESISTING STEEL, SILVER PLATED, LEFT HAND THREAD - CLASSIFICATION: 600 MPA (AT AMBIENT TEMPERATURE)/425 DEGREE C
    BS A 316:1997 Nuts, hexagonal, slotted (castellated), normal height, normal across flats, with MJ threads, classifications. 600 MPa (at ambient temperature)/120°C, 600 MPa (at ambient temperature)/235°C, 900 MPa (at ambient temperature)/425°C, 1100 MPa (at ambient temperature)/235°C, 1100 MPa (at ambient temperature)/315°C, 1100 MPa (at ambient temperature)/650°C, 1210 MPa (at ambient temperature)/730°C, 1250 MPa (at ambient temperature)/235°C and 1550 MPa (at ambient temperature)/600°C. Di\'
    ISO 8279:2008 Aerospace Nuts, hexagonal, plain, normal height, normal across flats, with MJ threads, classifications: 600 MPa (at ambient temperature)/120 degrees C, 600 MPa (at ambient temperature)/235 degrees C, 900 MPa (at ambient temperature)/425 degrees C, 1 100 MPa (at ambient temperature)/235 degrees C, 1 100 MPa (at ambient temperature)/315 degrees C, 1 100 MPa (at ambient temperature)/650 degrees C, 1 210 MPa (at ambient temperature)/730 degrees C, 1 250 MPa (at ambient temperature)/235 degrees C and 1 550 MPa (at ambient temperature)/600 degrees C Dimensions
    ISO 9216:2002 Aerospace — Nuts, hexagonal, slotted (castellated), for pulleys, in alloy steel and cadmium plated or in corrosion-resistant steel and passivated — Dimensions and masses
    I.S. EN 3226:2009 NUTS, HEXAGON, PLAIN, NORMAL HEIGHT, NORMAL ACROSS FLATS, STEEL, CADMIUM PLATED - CLASSIFICATION 1100 MPA/235 DEGREES C
    BS EN 4069:1996 Nuts, hexagon, plain, reduced height, reduced across flats, in heat resisting steel, passivated. Classification: 600MPa (at ambient temperature)/650°C
    BS EN 3230:2001 Aerospace series. Nuts, hexagon, slotted/castellated, reduced height, normal across flats, in steel, cadmium plated. Classificaiton: 900 MPa (at ambient temperature)/235°C
    BS EN 2810:2001 Aerospace series. Nuts, hexagon, slotted/castellated, reduced height, normal across flats, in heat resisting steel, passivated. Classification: 900 MPa (at ambient temperature)/650°C
    EN 2809 : 2001 Aerospace series - Nuts, hexagon, slotted / castellated, reduced height, normal across flats, in heat resisting steel, silver plated - Classification: 900 MPa (at ambient temperature) / 650 °C
    EN 3228:2010 Aerospace series - Nuts, hexagonal, plain, reduced height, normal across flats, in steel, cadmium plated - Classification: 900 MPa (at ambient temperature) / 235 °C
    EN 3229 : 2009 AEROSPACE SERIES - NUTS, HEXAGONAL, PLAIN, REDUCED HEIGHT, NORMAL ACROSS FLATS, IN STEEL, CADMIUM PLATED, LEFT HAND THREAD - CLASSIFICATION: 900 MPA (AT AMBIENT TEMPERATURE)/235 DEGREE C
    EN 3227:2010 Aerospace series - Nuts, hexagonal, plain, normal height, normal across flats, in steel, cadmium plated, left hand thread - Classification: 1 100 MPa (at ambient temperature) / 235 °C
    EN 2811 : 2016 AEROSPACE SERIES - NUTS, HEXAGON, SLOTTED/CASTELLATED IN STEEL CADMIUM PLATED - CLASSIFICATION: 1100 MPA/235 DEGREE C
    EN 2852 : 2010 AEROSPACE SERIES - NUTS, HEXAGONAL, PLAIN, NORMAL HEIGHT, NORMAL ACROSS FLATS, HEAT RESISTING STEEL PASSIVATED - CLASSIFICATION: 1100 MPA/650 DEGREES C
    EN 3230 : 2001 AEROSPACE SERIES - NUTS, HEXAGON, SLOTTED/CASTELLATED, REDUCED HEIGHT, NORMAL ACROSS FLATS, IN STEEL, CADMIUM PLATED - CLASSIFICATION: 900 MPA (AT AMBIENT TEMPERATURE)/235 DEGREE C
    EN 4069:1996 Aerospace series - Nuts, hexagon, plain, reduced height, reduced across flats, in heat resisting steel, passivated - Classification: 600 MPa (at ambient temperature)/650°C
    EN 3226 : 2009 Nuts, hexagon, plain, normal height, normal across flats, steel, cadmium plated - Classification 1 100 MPa/235 °C
    EN 2810 : 2001 AEROSPACE SERIES - NUTS, HEXAGON, SLOTTED/CASTELLATED, REDUCED HEIGHT, NORMAL ACROSS FLATS, IN HEAT RESISTING STEEL, PASSIVATED - CLASSIFICATION: 900 MPA (AT AMBIENT TEMPERATURE)/650 DEGREE C
    BS EN 2811:2016 Aerospace series. Nuts, hexagon, slotted/castellated in steel cadmium plated. Classification. 1 100 MPa/235 °C
    BS EN 2852:2010 Aerospace series. Nuts, hexagonal, plain, normal height, normal across flats, heat resisting steel passivated. Classification: 1100 MPa/650°C
    NF EN 2869 : 2010 AEROSPACE SERIES - NUTS, HEXAGONAL, SLOTTED/CASTELLATED, NORMAL HEIGHT, NORMAL ACROSS FLATS, IN HEAT RESISTING STEEL, PASSIVATED - CLASSIFICATION: 1100 MPA (AT AMBIENT TEMPERATURE)/650 DEGREES C
    PREN 2810 : 200P2 AEROSPACE SERIES - NUTS, HEXAGON, SLOTTED/CASTELLATED, REDUCED HEIGHT, NORMAL ACROSS FLATS, IN HEAT RESISTING STEEL, PASSIVATED - CLASSIFICATION: 900 MPA (AT AMBIENT TEMPERATURE)/650 DEGREES C
    PREN 3226 : 200P1 AEROSPACE SERIES - NUTS, HEXAGON, PLAIN, NORMAL HEIGHT, NORMAL ACROSS FLATS, IN STEEL, CADMIUM PLATED - CLASSIFICATION: 1 100 MPA (AT AMBIENT TEMPERATURE)/235 DEGREES C
    DIN EN 3771:1999-07 (Draft) AEROSPACE SERIES - NUTS, BIHEXAGONAL, PLAIN, IN HEAT RESISTING STEEL, MOS[2] LUBRICATED - CLASSIFICATION: 1100 MPA (AT AMBIENT TEMPERATURE)/315 DEGREES C
    PREN 2869 : 200P1 AEROSPACE SERIES - NUTS, HEXAGONAL, SLOTTED/CASTELLATED, NORMAL HEIGHT, NORMAL ACROSS FLATS, IN HEAT RESISTING STEEL, PASSIVATED - CLASSIFICATION: 1 100 MPA (AT AMBIENT TEMPERATURE)/650 DEGREES C
    PREN 2852 : 200P1 AEROSPACE SERIES - NUTS, HEXAGONAL, PLAIN, NORMAL HEIGHT, NORMAL ACROSS FLATS, HEAT RESISTING STEEL PASSIVATED - CLASSIFICATION: 1100 MPA/650 DEGREES C
    PREN 2895 : 200P1 AEROSPACE SERIES - NUTS, HEXAGONAL, PLAIN, NORMAL HEIGHT, NORMAL ACROSS FLATS, IN CORROSION RESISTING STEEL, PASSIVATED - CLASSIFICATION: 900 MPA (AT AMBIENT TEMPERATURE)/425 DEGREES C
    PREN 2923 : 200P2 AEROSPACE SERIES - NUTS, HEXAGON, PLAIN, REDUCED HEIGHT, REDUCED ACROSS FLATS, IN HEAT RESISTING STEEL, SILVER PLATED - CLASSIFICATION: 600 MPA (AT AMBIENT TEMPERATURE)/425 DEGREES C
    PREN 2924 : 200P2 AEROSPACE SERIES - NUTS, HEXAGON, PLAIN, REDUCED HEIGHT, REDUCED ACROSS FLATS, IN HEAT RESISTING STEEL, SILVER PLATED, LEFT HAND THREAD - CLASSIFICATION: 600 MPA (AT AMBIENT TEMPERATURE)/425 DEGREES C
    PREN 3771 : 200P3 AEROSPACE SERIES - NUTS, BIHEXAGONAL, PLAIN, IN HEAT RESISTING STEEL, MOS[2] LUBRICATED - CLASSIFICATION: 1100 MPA (AT AMBIENT TEMPERATURE)/315 DEGREES C
    ISO 9140:1998 Aerospace Nuts, plain or slotted (castellated) Test methods
    I.S. EN 2811:2016 AEROSPACE SERIES - NUTS, HEXAGON, SLOTTED/CASTELLATED IN STEEL CADMIUM PLATED - CLASSIFICATION: 1100 MPA/235 DEGREES C

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 8788:2000 Aerospace Nuts, metric Tolerances of form and position
    ISO 5855-2:1999 Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts
    ISO 1463:2003 Metallic and oxide coatings Measurement of coating thickness Microscopical method
    ISO 7870:1993 Control charts General guide and introduction
    ISO 9002:1994 Quality systems — Model for quality assurance in production, installation and servicing
    ISO 3452:1984 Non-destructive testing — Penetrant inspection — General principles
    ISO 3887:2003 Steels Determination of depth of decarburization
    ISO/TR 13425:2006 Guidelines for the selection of statistical methods in standardization and specification
    ISO 7966:1993 Acceptance control charts
    ISO 9140:1998 Aerospace Nuts, plain or slotted (castellated) Test methods
    ISO 9003:1994 Quality systems Model for quality assurance in final inspection and test
    ISO 9227:2017 Corrosion tests in artificial atmospheres — Salt spray tests
    View more information

    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective