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Application requirements
Thickness of base material
Recommended flange thickness
Thickness of fastened material
Sheet thicknesses and overlap types
(a)
single
(b)
side lap
S235 S355
X-EDNK22 3– 6 mm 3–6 mm
X-EDN19 5–10 mm 5–8 mm
(c)
end overlap
X-EDNK22 THQ12,
X-EDN19 THQ12
(d)
side lap and end overlap
Fastener Nominal sheeting thickness Overlap types
tlI [mm] tIl = 3–4 mm tIl ≥ 4 mm
X-EDNK22 0.63–0.75 a, b, c, d a, b, c, d
0.75–1.00 a, c a, b, c, d
X-EDN19 0.63–0.75 – a, b, c, d
0.75–1.00 – a, c
• The recommendations apply if the supporting structure is flexible enough so that forces of constraint from
temperature differentials can be neglected.
• These recommendations are valid for sheets up to S350GD.
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