BS 3643-2:1981 - ISO metric screw threads. Specification for selected limits of size – BSI British Standards

BS 3643-2:1981

ISO metric screw threads. Specification for selected limits of size

Status : Revised, Superseded, Withdrawn   Published : December 1981 Replaced By : BS 3643-2:2007

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This British Standard, a part of the BS 3643 series, specifies the fundamental deviations, tolerances and limits of size for the tolerance classes 4H, 5H, 6H and 7H for internal threads (nuts) and 4h, 6g and 8g for external threads (bolts) where appropriate for:

  • coarse pitch series within the range 1 mm to 68 mm diameter
  • fine pitch series within the range 1 mm to 33 mm diameter
  • constant pitch series within the range 8 mm to 300 mm diameter.

For certain diameter/pitch combinations tolerance class 4H for internal threads and tolerance classes 6h and 4g for external threads have been included in appendix A primarily for aerospace use.




Standard NumberBS 3643-2:1981
TitleISO metric screw threads. Specification for selected limits of size
StatusRevised, Superseded, Withdrawn
Publication Date31 December 1981
Confirm Date01 November 2003
Withdrawn Date30 November 2007
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Replaced ByBS 3643-2:2007
Amended ByAMD 5094
Draft Superseded By81/70041 DC85/71584 DC
DescriptorsISO metric threads, Thread forms, Threads, Nuts, Bolts, Diameter, Dimensions, Thread pitch, Size, Dimensional tolerances, Aircraft components
ICS21.040.10
Title in FrenchFiletages métriques ISO. Spécification pour la sélection de dimensions limites
Title in GermanMetrisches ISO-Gewinde. Spezifikation fuer die Uebersicht der Grenzmasse
CommitteeFME/9
ISBN0 580 12412 6
PublisherBSI
FormatA4
DeliveryNo
Pages46
File Size630.2 KB
Price£240.00


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