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Material:
Heat treated steel with surface corrosion protection coating
Application:
Used for fixing timber components, timber materials, and steel parts to timber and plywood substrates.
German approval Z-9.1-435
The advantages of System WFC from SFS intec:
- no need to pre-drill
- milled ribs for easy countersinking
- cost saving fast assembly
- special washer increases head strength
Advantages of System WFR from SFS intec
- double pitch thread provides 50% faster fastening
- excellent resistance to tear out
- secondary rough thread reduces insertion resistance
- under-head ribs eliminate splitting and breaks
Advantages of System WFD from SFS intec
- no need to pre-drill
- internal drive allows countersinking and removal
- hexagon drive for secure grip during insertion
- cost saving fast assembly
- washer increases head strength
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