Countersunk head screw with hexagon socket - SCR-ISO10642-08.8-HS2,5-(ZNSHR)-M4X20

Countersunk head screw with hexagon socket

Name: Countersunk head screw with hexagon socket
Brand: Würth
SKU: 418144 20

ISO 10642 steel 08.8 zinc-nickel silver ZNSHR
SCR-ISO10642-08.8-HS2,5-(ZNSHR)-M4X20

Art.-no. 418144 20

EAN 4061338917879

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Countersunk head screw with hexagon socket

Art.-no. 418144 20

Price for selected packaging unit

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x 1000 pcs

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ISO 10642, steel 08.8, zinc-nickel silver (ZNSHR)

Connection elements with a galvanised chromium (VI)-free zinc-nickel coating are suitable for applications with a high risk of corrosion. The coating comprises a zinc-nickel alloy layer and a sealing coat (top coat with integrated lubricating particles).

Overview of advantages:

Corrosion resistance of up to 720 hrs to base metal corrosion in accordance with DIN EN ISO 9227 NSS

Adjusted friction coefficient range of 0.12 μ–0.18 μ due to top coat with integrated lubricating particles, thermal capacity up to 120°C

Even coat distribution

Functional and decorative

Notice

DIN 7991 has been withdrawn and replaced by ISO 10642. There is some limited similarity (some head heights and head diameters changed | nominal Ø M18, M22, M24 removed | Stainless steels removed | strength classes 10.9 and 12.9 added).

Due to their head geometry, these screws can only be subjected to limited loads, see DIN EN ISO 898-1

Product information

Würth Catalogue

Datasheets(X)

Certificates/ Documents


Thread type x nominal diameter (d₁)	M4
Length (l₁)	20 mm
Head diameter (d_k)	8.96 mm
Head height (k₁)	2.48 mm
Internal drive (s₁)	HS2.5
Standards	ISO 10642
Material	Steel
Property class	08.8
Surface	Zinc nickel silver
RoHS-compliant	Yes
Head type	Countersunk head
Drive type	Hexagon socket
Thread type	Metric thread
Thread form	Standard metric thread
Product class	A