Hexagon head bolt DIN EN 14399-4, steel 10.9, hot-dip galvanised (hdg), for high-strength structural bolting assembly
EN 14399-4 steel 10.9, hot-dip galvanised
SCR-EN14399/4-10.9-K1-WS32-(HDG)-M20X280
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High-strength preloadable fittings for bolted connections in metal constructions
- HV system
- K1 class
- Strength class 10.9
- Hot-dip galvanised steel
High-tensile prestressed bolts with large width across flats:
Large under-head surface
- Reduced surface pressure
- Reduced setting
Large under-head radius
- Reduced notching effect
- Better long-term resistance to vibration
Defined friction properties
- Enables planned preloading
Lot marking on the product
- This omits the need to request test certificate 3.1 in accordance with EN 10204. (see tab. 1 DIN EN 1090-2:2018-09)
CE marking
- Controlled construction product
The design of supporting steel structures with high-strength fittings is regulated by DIN EN 1090-2 and DASt directive 024. “Only use complete fitting sets from one manufacturer (bolts, nuts and washers)”.
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.
Datasheets(X)
 | |
Thread type x nominal diameter (d1) | M20 |
Length (l1) | 280 mm |
Head height (k1) | 13 mm |
Standards | EN 14399-4 |
Material | Steel |
Property class | 10.9 |
Surface | Hot dip galvanized |
k-class | K1 |
Head type | Hexagon head |
Head details | With large under head surface and large under head radius |
External drive (s1) | WS32 |
Thread design | Partial thread |
Shank diameter (ds) | 20 mm |
Thread length (metric thread) (b) | 33 mm |
Area of application | Steel construction |
Suitable for | High-strength friction connections in steel structures |
Regulated area | hEN 14399-1 |
Construction product | Yes |
Declaration of performance (EU-CPR) | Yes |
RoHS-compliant | Yes |
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