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For fastening profiled metal sheets with or without intermediate insulation onto thin-walled steel or aluminum substructures and wood substructures.


  • Drilling, thread-forming and fastening in one step
  • Connect components in one step
  • Reduces assembly times
  • Save tool changes and drilling tool costs
  • Available with captive sealing disk upon request


  • Hexagon drive
  • Free Spin Zone under the head facilitates longitudinal joints
  • Small dead centre prevents misalignment on the component surface
  • Galvanised steel sealing washer or stainless steel with vulcanised elastomer.
  • Excellent atmospheric and UV resistance.
  • A2 stainless steel with case-hardened carbon steel drill point
  • Stainless steel sealing washer
  • Pre-assembled sealing washer 

Product details 

 EJOT self-drilling screws 


 Screw material:

A2 stainless steel with case-hardened carbon steel drill point 

 For components made of:

Steel or aluminum

 Building authorities approved


 Max. drill capacity [inches (mm)]

0.472" (12mm)


Z-14.4-426 and Z-14.1-537

Technical data

Drilling capacity ti + tii :    1.0 + 1.0 mm
External hexagon drive:    A/F8

Approved for sheet metal thicknesses of:

  • 0.80 mm (0.03150’’ or gage 20) aluminium sheets
  • 0.55 mm (0.02165’’ or US steel gauge 24) steel sheets

ø inches (mm)

Length inches (mm)

Clamping thickness inches (mm)

Units per pack

Order description Item number
Sealing washer E16, ø 5/8" (16mm)          
1/4" (6mm) 1"(25mm) 0 - 7/64" (0 - 7mm) 500 JT3-2-6x25-E16  3595511321

Other dimensions or variants are available on request.

Download the brochure