Wing-tip drilling screw with countersunk milling head With AW drive pias®
Wing-pias steel zinc-plated countersunk head AW
SCR-DBIT-WNG-CS-CUTHD-AW20-(A3K)-3,9X25
ZEBRA PIAS
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Zinc-plated steel
With self-tapping thread
Countersunk milling head for use with hard and soft woods
AW drive system
- Enhanced torque transmission
- Longer life
- Optimum centring
- Better mounting output thanks to fatigue-free screwing in; the required contact pressure for transmission of the torques is considerably lower
- Largest possible contact surface of bit in screw drive
- Even force distribution prevents damage to the surface-protection coating and therefore ensures better resistance to corrosion
- The recommended maximum wood thickness lH was calculated with reference to the maximum attachment thickness lU of the surface!
- Wing-pias® screws must be appropriately tested for usability for each application case. Only install using application tools with a depth stop and claw coupling
- Drilling screws must be processed with a suitable drill driver (e.g. cordless drill driver with depth stop)
- The use of impact screwdrivers is not permitted
- Drilling screws must be attached perpendicular to the surface of the component
For 3.9/4.2/4.8 mm ∅
General construction permit Z-14.4-634
For use with wood and gypsum material boards and cement-bound mineral construction material boards with thin-walled steel profiles.
Drilling screws may only be used where dampness is not to be expected. For connection elements with a construction permit, the permit, and in particular Part 2 "Special regulations", must always be observed.
Datasheets(X)
- Force feeding of the screw is prevented by the wings drilling out the wood
- The core hole is drilled into the substructure. The wings break off upon contact with the metal
- The first few turns of the screw cut the thread, the remainder of the screw then screws into the thread
 | |
Nominal diameter (d) | 3.9 mm |
Length (l) | 25 mm |
Head diameter (dk) | 7.5 mm |
Head height (k1) | 3.2 mm |
Drill tip length (lp) | 8 mm |
Other standard | WN 219 |
Material | Steel |
Surface | Zinc plated |
Head type | Countersunk milling head |
Internal drive | AW20 |
Thread type | Self-tapping screw thread |
Min. recommended substructure thickness | 1.5 mm |
Max. material thickness to be drilled through (metal) (lU) | 2.5 mm |
Max. material thickness for wood (lH) | 13 mm |
Min./max. recommended installation speed (idling) | 1700-2500 rpm |
Approval | DIBt Z-14.4-634 |
RoHS-compliant | Yes |
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