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Drilling screw, hexagon head with undercut and sealing washer piasta®
Self-tapping fcd. cnstrctn. screw, piasta-undercut
SCR-DBITR-WSH14-H-WS8-(RUS)-5,5X26
ZEBRA PIASTA
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A2 stainless steel with drill bit tip and moulded thread made of hardened steel. Screwing on of steel and aluminium profiles in steel and aluminium without over-turning ≤ 2 mm
The sealing washer consists of an A2 stainless steel metal back with vulcanised seal made of high-quality EPDM
Suitable for component combinations tI/tII according to approval ETA-10/0184
- Steel/steel for ∅ 4.8 mm and ∅ 5.5 mm
- Aluminium/steel for ∅ 4.8 mm and ∅ 5.5 mm
- Aluminium/aluminium for ∅ 4.8 mm and ∅ 5.5 mm
- and additionally for ∅ 5.5 mm steel/2 x steel (cassette attachment)
The thread-free part (undercut) below the screw head prevents the screw from overturning and thus ensures that splice plate screw connections in thin metal profiles are safe from working loose.
Datasheets(X)
 | |
Material | Bimetal |
Surface | Flake zinc |
Material of sealing washer | Stainless steel A2 |
Surface of the sealing washer | Plain |
Material of gasket | Ethylene propylene diene terpolymer rubber |
RoHS-compliant | Yes |
Head type | Hexagon head with collar |
Drive type | Hexagon |
Thread type | Self-tapping screw thread |
Shape of tip | Drilling tip |
Underground | Steel, Aluminum |
Nominal diameter (d1) | 5.5 mm |
Length (l1) | 26 mm |
Head diameter (dk) | 10.9 mm |
Outside diameter of the sealing washer (d2) | 14 mm |
Washer thickness (h1) | 4 mm |
Head height (k1) | 5 mm |
Drill tip length (lp) | 5.5 mm |
Screw-thread length with drill tip | 20 mm |
External drive (s1) | WS8 |
Max. material thickness to be drilled through (metal) | 4.5 mm |
For max. substructure thickness | 2 mm |
Min./max. attachment thickness | 0-5.0 mm |
Approval | ETA-10/0184 |
Min./max. recommended installation speed (idling) | 1200-1800 rpm |