EN 27721:1991
Current
The latest, up-to-date edition.
Countersunk head screws - Head configuration and gauging (ISO 7721:1983)
16-10-1991
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) |
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, flexible and cost effective.