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Hexagonal bolt for high-strength fittings

EN 14399-4 steel 10.9, hot-dip galvanised

Art.-no. 007941660

Prices for customers after login

Hexagonal bolt for high-strength fittings

Art.-no. 007941660

Prices for customers after login



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DIN EN 14399-4 steel 10.9, hot-dip galvanised (TZN)

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.

Product information

Würth Catalogue(X)

Catalogue page as PDF 1


CAD data (available after login)

Certificates/ Documents



Thread type x nominal diameter (d1)


Length (l1)

60 mm

Head height (k1)

10 mm


EN 14399-4



Property class



Hot dip galvanized



Head type

Hexagon head

Head details

With large under head surface and large under head radius

External drive (s1)


Thread design

Partial thread

Shaft diameter (ds)

16 mm

Thread length (metric thread) (b)

28 mm

Min./max. pack thickness

29-34 mm

Min./max. grip length

37-42 mm

Area of application

Steel construction

Suitable for

High-strength friction connections in steel structures

Regulated area

hEN 14399-1

Construction product


Declaration of performance (EU-CPR)




Required accessory:

Hexagon nut for high-strength fittings


DIN EN 14399-4, steel 10T, hot-dip zinc-plated
x 1 pcs
Flat washer with chamfer for high-strength fittings


Hot-dip galvanised steel, hardness 300 HV to 370 HV. High-strength preloaded structural screw connection for metal construction according to DIN EN 14399-6
x 1 pcs

Packaging unit

The packaging unit defines the number of articles in one packaging. In the catalog segment you can choose from different packaging units if a pop-up menu is displayed.

Just leave the field empty if you don't know the packaging unit when directly entering the article number in the shopping basket or when importing with Easy-/VarioScan. The packaging unit will be determined automatically.

Structure of our article number

The article number is made up of the following: VVVVAAABBB
VVVV = 4 digits for prefix number (please note that the first digit is currently always 0)
AAA = 3 digits for dimension part 1
BBB = 3 digits for dimension part 2

Example article number structures:
Example 1: Screw with dimensions of 4x10 mm:
00574 10 (2 spaces between the 4 and the 10)

Example 2: Screw with dimensions of 10x20 mm:
005710 20 (1 space between the 10 and the 20)

Example 3: Flat washer with an internal diameter of 6 mm:

Information on price display

Price per packaging unit (PU):
The displayed price is always in line with the displayed packaging, if the PU is 250 the price for 250 units, if the PU is 300 the price for 300 units.

Price with price key representation (PSL):
The price always applies to a quantity ruled through the price key:
Price for 1 unit
Price for 100 units
Price for 1000 units


The quantity shows the number of pieces or units of measure contained in the order or delivery for the respective article.
In contrast to sales packaging and secondary packaging, the disposal costs for chemical-technical products are shown separately. The breakdown of the individual costs can be found on the relevant products and also in the shopping cart, as well as in our General Terms and Conditions (GTC).

Cust. Mat. No.

Hazardous Material

Product information

Würth Catalogue

Catalogue page as PDF  | 


Datasheets ()

CAD data  | 

Certificates/ Documents



Technical information