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EN 27721:1991

Current

Current

The latest, up-to-date edition.

Countersunk head screws - Head configuration and gauging (ISO 7721:1983)

Published date

16-10-1991

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Foreword
1 Scope and field of application
2 Head configuration
3 Gauging method
Annex Calculation basis for the maximum head diameter
      of countersunk heads for screws

Specifies the characteristics of products with thread sizes from M 1,6 up to and including M 20; it recommends a gauging method for the dimensions laid down in the respective product standards; the annex contains the calculation basis

Committee
CEN/TC 185
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current

Standards Relationship
NS ISO 7721 : 1ED 1992 Identical
PN EN 27721 : 2014 Identical
ISO 7721:1983 Identical
NF EN 27721 : 1992 Identical
SNV DIN EN 27721 : 1992 Identical
UNE-EN 27721:1992 Identical
PN 93/M-82251 : 1993 Identical
SNV NF EN 27721 : 1992 Identical
BS EN 27721:1992 Identical
NEN ISO 7721 : 1992 Identical
UNI EN 27721 : 1992 Identical
I.S. EN 27721:1992 Identical
NBN EN 27721 : 1992 Identical
DIN EN 27721:1992-02 Identical

BS EN ISO 15482:1999 Cross recessed countersunk head drilling screws with tapping screw thread
03/308658 DC : DRAFT MAY 2003 EN ISO 15065 - COUNTERSINKS FOR COUNTERSUNK HEAD SCREWS WITH HEAD CONFIGURATION IN ACCORDANCE WITH ISO 7721
ISO 15482:1999 Cross recessed countersunk head drilling screws with tapping screw thread
BS EN ISO 15483:1999 Cross recessed raised countersunk head drilling screws with tapping screw thread
EN ISO 15482:1999 Cross recessed countersunk head drilling screws with tapping screw thread (ISO 15482:1999)
EN ISO 15483:1999 Cross recessed raised countersunk head drilling screws with tapping screw thread (ISO 15483:1999)
EN ISO 7721-2:1994 Countersunk flat head screws - Part 2: Penetration depth of cross recesses (ISO 7721-2:1990)

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