¿Qué diferencia hay entre la cabeza plana y la redonda?

La de cabeza plana (broca cónica) queda más enrasada con la pieza. La de cabeza redonda apoya sobre la superficie y queda a la vista.

¿Hay que hacer agujero antes?

No. La punta de broca taladra la chapa y el tornillo hace su propia rosca, así que lo pones directamente con el atornillador.

¿Qué punta necesito?

Una punta Phillips PH2 para casi todas las medidas, y una PH3 para el de cabeza redonda de 5,5 × 38.

¿Qué largo necesito?

El largo tiene que cubrir todo lo que vas a fijar. En la tabla tienes el espesor máximo a fijar de cada medida.

Sí. Repartimos en toda Tenerife y enviamos a otras islas. También puedes recogerlos en nuestro almacén de Icod de los Vinos.

Flat and round head self-drilling screws in Tenerife

Self-drilling screws with drill point and PH drive, in two heads: flat (countersunk) and round. The point drills the sheet and the screw cuts its own thread, with no pilot hole. Galvanised, from 3.5 to 5.5 mm. In Icod de los Vinos, with delivery across Tenerife.

Flat or round head
PH2 and PH3 drive
From 3.5 × 16 to 5.5 × 38
Delivery across Tenerife

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Sizes and order

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Self-drilling screw sizes
Head	Size (mm)	Drive	Max. fixture thickness	Units per box
Flat head	3.5 × 16	PH2	9.2 mm	1000
Flat head	4.2 × 19	PH2	10.3 mm	1000
Flat head	4.2 × 25	PH2	16.3 mm	500
Flat head	4.2 × 32	PH2	23 mm	500
Flat head	4.2 × 38	PH2	29 mm	500
Flat head	4.8 × 50	PH2	39.5 mm	500
Round head	3.5 × 19	PH2	12.1 mm	1000
Round head	3.5 × 25	PH2	18.1 mm	500
Round head	4.2 × 19	PH2	10.3 mm	1000
Round head	4.2 × 25	PH2	17.7 mm	500
Round head	4.2 × 32	PH2	24.5 mm	500
Round head	4.2 × 38	PH2	30.5 mm	500
Round head	5.5 × 38	PH3	27.5 mm	500

The size is the thread diameter by the length. The maximum fixture thickness is the manufacturer's figure for each size. All are galvanised with Phillips (PH) drive. Units per box according to the manufacturer. Manufacturer's data.

Services

Everything in one orderCombine the screws with the drill bits, rivets 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 size suits you.

Frequently asked questions about self-drilling screws

What's the difference between flat and round head?

The flat head (countersunk) sits flusher with the part. The round head rests on the surface and stays visible.

Do you need to drill a hole first?

No. The drill point drills the sheet and the screw cuts its own thread, so you drive it straight in with the screwdriver.

What bit do I need?

A Phillips PH2 bit for almost all sizes, and a PH3 for the 5.5 × 38 round head.

What length do I need?

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

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.

Need self-drilling screws?

Tell us the size and quantity, and we'll get back to you as soon as possible.

Request a quote Call 922 12 12 23