Other products referenced in EN standards
Metallic constructions - mechanical assembly processes

These bolts are very common on the European market, as they are less expensive than HR bolts. Initially conforming to the specifications of a German DIN standard (their name comes from the German "Hochfest Vorgespann" meaning "high strength for prestressing"), they are now standardized at European level (standard NF EN 14399-4) and can be used as high-strength bolts suitable for prestressing.

Screw and nut are marked "HV". The washers are for the HR system.

Their mechanical characteristics differ from those of HR bolts:

• only available in 10.9 quality;

• The height of the nuts is lower than that of the HR bolts (approximately 80% of the nominal screw diameter);

• the threaded length of the screws is shorter.

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