Welcome to Würth Aerospace Solutions For trade customers only

Countersunk screw with hexalobular head ISO 14581, steel, strength class 8.8, zinc-nickel-plated, black (ZNBHL)

ISO 14581 steel 08.8, zinc-nickel, black
SCR-CS-ISO14581-08.8-(ZNBHL)-M4X20

Art.-no. 401264 20
EAN 4053479666075

Prices for customers after login
Countersunk screw with hexalobular head ISO 14581, steel, strength class 8.8, zinc-nickel-plated, black (ZNBHL)

Art.-no. 401264 20

Prices for customers after login
Quantity
PU
x 500 pcs

Exclusively for trade customers

Register now and access more than 125,000 products

Fasteners with a zinc-plated chromium (VI)-free zinc-nickel black coating (ZNBHL) 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).



Corrosion resistance:



  • Diameter ≥ M2 – 360h*

  • Diameter ≥ M4 – 480h*

  • Diameter ≥ M10 – 720h*


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


Overview of advantages:



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

  • Chromium(VI)-free

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

  • Thermal capacity up to 120°C

  • Even coating distribution

  • Functional and decorative
Notice
  • Head dimensions in ISO 14581 countersunk screws are gauged in accordance with ISO 7721

  • Some screws with short dimensions are threaded up to the head, see also ISO 14581

  • Countersinks for screw heads in accordance with ISO 14581 must comply with ISO 15065
Product information

Datasheets(X)

Certificates/ Documents

 | 

 | 

Thread type x nominal diameter (d1)

M4

Length (l1)

20 mm

Head diameter (dk )

8.4 mm

Head height (k1)

2.7 mm

Standards

ISO 14581

Material

Steel

Property class

08.8

Surface

Zinc nickel black

RoHS-compliant

Yes

Corrosion protection period

480 h

Head type

Countersunk head

Drive type

Internal hexalobular

Internal drive

TX20

Thread type

Metric thread

Pitch

0.7 mm

Thread form

Standard metric thread

Product class

A

Art.-no.
Cust. Mat. No.

Hazardous Material

Product information

Datasheets()

Datasheets ()

CAD data  | 

Certificates/ Documents

 | 

 | 

Technical information