EN 14399-4 steel 10.9, hot-dip galvanised
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High-strength preloadable fittings for bolted connections in metal constructions
High-tensile prestressed bolts with large width across flats:
Large under-head surface
Large under-head radius
Defined friction properties
Lot marking on the product
The design of steel structures with high-strength fittings is regulated by DIN EN 1090-2 and DIN EN 1993-1-8/NA. "Only use complete sets (screws, nuts and washers) from one manufacturer." (Extract from DIN EN 1993-1-8/NA:2010-12).
Due to batch traceability, these articles can only be purchased from and stored directly by the manufacturer and are therefore excluded from exchange or return!
Storage and transport:
Screws, nuts and washers are supplied in a hot-dip zinc-plated version with nut lubricated under process conditions. The female thread of the nut is not hot-dip zinc-plated and is protected against corrosion solely by the applied lubrication. Improper transport and storage conditions can result in corrosion of the female thread or to a change in the lubrication condition as supplied and the correlation between tightening torque and pretensioning force associated with this.
Catalogue page as PDF 1
CAD Data (available after login)
Thread type x nominal diameter (d1)
Head height (k1)
Hot dip galvanized
With large under head surface and large under head radius
External drive (s1)
Shaft diameter (ds)
Thread length (metric thread) (b)
Min./max. pack thickness
Min./max. grip length
Area of application
High-strength friction connections in steel structures
Declaration of performance (EU-CPR)
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