We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
  • BS ISO 1891 : 2009

    Current The latest, up-to-date edition.
    Add to Watchlist
    This Standard has been added successfully to your Watchlist
    Please visit My Watchlist to see all standards that you are watching.
    Please log in or to add this standard to your Watchlist.
    We could not add this standard to your Watchlist.
    Please retry or contact support for assistance.
    We could not add this standard to your Watchlist.
    Please retry or contact support for assistance.
    You have already added this standard to your Watchlist.
    Visit My Watchlist to view the full list.


    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2009

    Publisher:  British Standards Institution

    Add to Watchlist

    Add To Cart

    Table of Contents - (Show below) - (Hide below)

    1 Scope
    2 Screw threads
    3 Features of externally threaded fasteners
      3.1 Head shapes
      3.2 Forms of shank
      3.3 Ends of externally threaded fasteners
      3.4 Driving features
    4 Externally threaded fasteners
      4.1 Bolts and screws with ISO metric thread
           4.1.1 Bolts and screws with external driving feature
           4.1.2 Bolts and screws with internal driving feature
           4.1.3 Slotted head screws
           4.1.4 Cross recessed head screws
           4.1.5 Screws with captive components (screw and
                 washer assemblies)
           4.1.6 Round head bolts
           4.1.7 Countersunk head bolts
           4.1.8 Miscellaneous bolts and screws
      4.2 Tapping screws
      4.3 Tapping screws with captive components (tapping screw
           and washer assemblies)
      4.4 Drilling screws
      4.5 Thread rolling (thread forming) screws
      4.6 Thread cutting screws
      4.7 Wood screws
      4.8 Studs
      4.9 Set screws and headless screws
      4.10 Screw plugs
    5 Nuts
      5.1 Nuts with external driving feature
      5.2 Prevailing torque-type nuts
      5.3 Weld nuts
      5.4 Round nuts
      5.5 Miscellaneous nuts
    6 Washers
      6.1 Plain washers
      6.2 Taper washers
      6.3 Spring washers
      6.4 Lock washers
      6.5 Tab washers
    7 Pins
      7.1 Parallel pins
      7.2 Clevis pins
      7.3 Taper pins
      7.4 Grooved pins
      7.5 Spring-type straight pins
      7.6 Split pins
    8 Blind rivets

    Abstract - (Show below) - (Hide below)

    Specifies translation guidance for terms commonly used to describe fasteners.

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

    Committee FME/9/2
    Development Note Supersedes BS 6040(1981) and 07/19977385 DC. (03/2009)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    • Access your standards online with a subscription


      • 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