Hexagon Socket Head Cap Screw ISO 4762, 8.8 steel with silver zinc-flake coating (ZFSHL) - SCR-CYL-ISO4762-8.8-(ZFSHL)-M20X80

Hexagon Socket Head Cap Screw ISO 4762, 8.8 steel with silver zinc-flake coating (ZFSHL)

Name: Hexagon Socket Head Cap Screw ISO 4762, 8.8 steel with silver zinc-flake coating (ZFSHL)
Brand: Würth
SKU: 414942080

SCR-CYL-ISO4762-8.8-(ZFSHL)-M20X80

Art.-no. 414942080

EAN 4054458525581

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Hexagon Socket Head Cap Screw ISO 4762, 8.8 steel with silver zinc-flake coating (ZFSHL)

Art.-no. 414942080

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Quantity

x 25 pcs

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Zinc-flake coatings are chrome-(VI)-free corrosion protection coatings for commercial vehicle assembly, construction machinery, agricultural vehicles and equipment, and all other areas that have corrosion protection requirements at vehicle construction level.

Corrosion resistance for ZFSHL is:

Diameter ≥ M6 - 480h*

Diameter ≥ M10 - 720h*

* Guideline values: No base metal corrosion at points without thread in salt spray mist testing according to DIN EN ISO 9227 NSS.

The designation ZFSHL refers to the following corrosion coating:

Zinc-flake coating, with top coat, silver colour, with friction value adjusted lubrication.

Adjusted friction coefficient range from 0.09μ – 0.14μ due to top coat with integrated lubricating particles

Notice

ISO 4762 replaces DIN 912 | Standards are equivalent | Nominal range changed | Fine thread adopted in ISO 12474.

The dip-spin process typical of zinc-flake coatings can have a negative effect on the trueness to gauge in the case of small threads. For this reason, it is possible to ensure the screwability of size M5 threads, but not trueness to gauge.

Product information

Würth Catalogue

Datasheets(X)

Certificates/ Documents


Thread type x nominal diameter (d₁)	M20
Length (l₁)	80 mm
Head diameter (d_k)	30 mm
Head height (k₁)	20 mm
Standards	ISO 4762
Material	Steel
Property class	8.8
Surface	Flake zinc silver
RoHS-compliant	Yes
Corrosion protection period (3)	720 h
Head type	Socket head
Drive type	Hexagon socket
Internal drive (s₁)	HS17
Thread type	Metric thread
Thread form	Standard metric thread
Thread design	Partial thread
Product class	A
Tightening torque 90% yield strength (1)	406 Nm
Min./max. resulting pre-load force (2)	63.3-126.5 kN
Disc with hardness to be used	≥ 200 HV
Nut to be used with strength class	≥ 8

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

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