Description
Kovervit® DX
Chromiting®
Self-drilling
Screw for fixing roofing sheets and prefabricated metal walls to iron.
HEXAGONAL HEAD
sharp-edged, with a hollow collar, designed to house the elastic washer against the infiltration of water.
BS SELF-TAPPING THREAD
with self-tapping grooves, which enable it to be used in thick materials without prior tapping.
PUNTA
DRILLEX® self-drilling tip, which can be used to drill materials with a thickness of up to 7 mm, threading and screwing consecutively.
CASE HARDENING TREATMENT
More info: heat treatment
CHROMITING® PROTECTIVE TREATMENT
of an iridescent colour, it ensures a salt spray corrosion resistance of 240 hrs. Compliance with grade 4 of EN 1670 standard.
More info: finishing treatments
CE marking for load-bearing metal assembly elements, according to EAD 330046-01-0602:2016 (conferred by the CSTB Centre Scientifique duBâtiment, Paris, France). DoP (Declaration of Performance) issued, according to the European Construction Products Regulation 305/2011.
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- Application of the Kovervit® screw whose hollow collar is designed to house the elastic washer against the infiltration of water. In addition, the tapping grooves of the BS self-tapping thread enable this screw to be used in thick materials, without prior tapping
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- The characteristic self-drilling tip of the Drillex® screw, which enables an optimum drilling diameter to be obtained, threading and tightening consecutively up to a thickness of 5 mm.
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- Drillex® self-drilling tip: section of the screw that shows the characteristics of the Case Hardening Treatment
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- Sales box
