Information regarding Change-Over

from DIN 6914/15/16 to EN 14399 (High Tensile Fastening Sets)

Downward CompatibilityOld hot-dip galvanized set components may be replaced by new ones until, at least, 2011.

New Product MarkingHigh tensile set components according to EN 14399-4 and -6 show the CE mark.

New LabelingThe labels on the packages of high tensile set components according to EN 14399-4 and

EN 14399-6 give information regarding tightening instructions and show the CE mark.

Stock according to:

EN 14399-4/6

may be used on site regarding to:

DIN 6914/15/16

(new) EN 14399-4/6

(old) DIN 6914/15/16

(new) EN 14399-4/6

(old) DIN 6914/15/16

ONE WAY

Schedule for Change-Over from DIN-Standard to EN-Standard

Coexisting until end of September 2007 both standards DIN 6914/15/16 and EN 14399-4/6 were valid

simultaneously. After that date manufacturers were no longer allowed to produce parts according

to DIN 6914/15/16. Subject to certain conditions, however, high tensile set components according

to DIN 6914/15/16 may still be used until, at least, 2011. High tensile fi t bolts are standardized as

EN 14399-8 since March 2008.

One-Way Replaceability of Set Components

If EN 14399-4/6 sets are required then they must also be used. If, however, hot-dip galvanized

DIN 6914/15/16 sets are required, components of these may be replaced by components of

EN 14399-4/6 sets, provided that both are from the same manufacturer. For technical reasons set com-

ponents as processed of either standard must by no means be replaced by the other standard.

Taper WashersParts according to DIN 6917 or DIN 6918 will remain without an EN standardization.

Friction and Tightening Characteristics

Friction characteristics according to EN 14399 are described in k-classes. K-classes are defi ned

by the k-factor resulting from the ratio of tightening torque, thread dimension and preload force

(k = M / d / F). For FRIEDBERG high tensile sets the k-class K1 applies. K1 is set as 0,10 ≤ k ≤ 0,16

for both the hot-dip galvanized sets and sets as processed alike. As this implies a technical change

as compared to the former version of fastening sets as processed, those set components of old and

new standard must not be interchanged.

Note: Higher tightening torque still applies to fastening sets as processed according to

DIN 6914/15/16.

D EU

High Tensile Bolt DIN 6914 DIN EN 14399-4

High Tensile Nut DIN 6915 DIN EN 14399-4

High Tensile Washer DIN 6916 DIN EN 14399-6

High Tensile Fit Bolt DIN 7999 DIN EN 14399-8

Conformity Indicator Ü Mark CE Mark

German List of Offi cially Approved

Products for Construction A Part 1 B Part 1

August Friedberg GmbHwww.august-friedberg.de February 2009