Hexagon head bolt DIN EN 14399-4, steel 10.9, hot-dip galvanised (hdg), for high-strength structural bolting assembly - SCR-EN14399/4-10.9-K1-WS32-(HDG)-M20X55

Hexagon head bolt DIN EN 14399-4, steel 10.9, hot-dip galvanised (hdg), for high-strength structural bolting assembly

Name: Hexagon head bolt DIN EN 14399-4, steel 10.9, hot-dip galvanised (hdg), for high-strength structural bolting assembly
Brand: Würth
SKU: 007942055

EN 14399-4 steel 10.9, hot-dip galvanised
SCR-EN14399/4-10.9-K1-WS32-(HDG)-M20X55

Art.-no. 007942055

EAN 4047376333727

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Hexagon head bolt DIN EN 14399-4, steel 10.9, hot-dip galvanised (hdg), for high-strength structural bolting assembly

Art.-no. 007942055

Prices for customers after login

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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

Notice

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

Datasheets(X)

CAD data (available after login)

Certificates/ Documents


Thread type x nominal diameter (d₁)	M20
Length (l₁)	55 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 (d_s)	20 mm
Thread length (metric thread) (b)	33 mm
Min./max. pack thickness	20-25 mm
Min./max. grip length	28-33 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

Required accessory:

Product

Description

Quantity

Price
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Hexagon nut DIN EN 14399-4, steel 10Z, hot-dip galvanised, for high-strength structural bolting assemblies

NUT-HEX-EN14399/4-10Z-K1-WS32-(HDG)-M20

Art.-no. 007905 20

Flat washer with chamfer for high-strength fittings

WSH-HV-EN14399/6-K1-RD-(HDG)-D20

Art.-no. 007906 20

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

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

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

Example 3: Flat washer with an internal diameter of 6 mm:
VVVVAAABBB
04076

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