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Self-tapping screws in Tenerife

DIN 7504-K hex head self-drilling screw with 16 mm steel and EPDM washer. Its drill point drills the sheet without a pilot hole, and the washer seals the joint on façades and roofs. Galvanised steel, 6.3 mm and 25 to 130 mm long. In Icod de los Vinos, with delivery across Tenerife.

  • DIN 7504-K, drill point
  • 16 mm EPDM washer
  • 6.3 mm, from 25 to 130 mm
  • Delivery across Tenerife
Tornillo autorroscante DIN 7504-K con arandela EPDM

Sizes and order

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Self-tapping screw sizes
Size (mm)Max. fixture thicknessUnits per boxAdd to order
6.3 × 2513 mm500
6.3 × 3826 mm500
6.3 × 5038 mm250
6.3 × 6351 mm250
6.3 × 7563 mm250
6.3 × 10088 mm100
6.3 × 11098 mm100
6.3 × 120108 mm100
6.3 × 130118 mm100

The size is the thread diameter by the length, not counting the head. The maximum fixture thickness is the manufacturer's figure for the screw; with the EPDM washer fitted the useful thickness is slightly less. 16 mm EPDM washer and 10 mm spanner size on all sizes. Galvanised steel. Units per box according to the manufacturer. Manufacturer's data.

6.3 self-tapping screw technical data

Manufacturer's values for the 6.3 mm DIN 7504-K screw.

Key
10 mm
EPDM washer diameter
16 mm
Head washer diameter
12.6 mm
Head thickness
6.3 mm
Thread outer diameter
6.25 mm
Thread pitch
1.8 mm
Drilling capacity in steel
From 2.5 to 6 mm
Drilling speed in steel
From 1,000 to 1,800 rpm
Tensile strength
13.36 kN
Shear strength
6.68 kN

Recommended pull-out load in steel sheet

Depends on the thickness of the sheet the thread goes into.

Pull-out load
Sheet thicknessRecommended load
2.5 mm1.44 kN
4 mm3.19 kN
5 mm4.83 kN

1 kN is about 100 kg. The sheet usually takes less than the screw, so the sheet strength governs. Don't exceed 6 mm of steel to drill or the point may break.

Services

  • Everything in one orderCombine the screws with the drill bits, wall plugs and the rest of the fasteners in a single order.
  • Delivery across the islandWe deliver to your site or workshop, and ship to the other islands.
  • Warehouse collectionOver 1,000 m² in Icod de los Vinos.
  • Expert adviceTell us what sheet you're going to fix and we'll tell you which length suits you.

Frequently asked questions about self-tapping screws

What is a DIN 7504-K self-tapping screw?

It's a hex head self-drilling screw with a drill point. It drills the sheet and cuts its own thread, with no pilot hole.

What is the EPDM washer for?

The steel washer with EPDM rubber, 16 mm in diameter, seals the hole. That way the joint is watertight on sheet façades and roofs.

What thickness of steel can it drill?

The 6.3 mm screw drills 2.5 to 6 mm of steel. The total of the sheets being joined mustn't exceed that thickness, or the point may break.

What length do I need?

The length must cover everything you're fixing. The table shows the maximum fixture thickness for each size.

What spanner or socket do I need?

A 10 mm spanner or socket, preferably magnetic, on the screwdriver. Drill in steel at 1,000 to 1,800 rpm.

Do you ship?

Yes. We deliver across Tenerife and ship to the other islands. You can also collect them from our warehouse in Icod de los Vinos.

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