Installation Guidelines

Screwgun Utilization

For the correct application of Manzato’s self-drilling fasteners, it is required the utilization of a screwgun (1.800 to 2.500 rpm) with clutch system, stop and progressive trigger (figure 1), available in national market.

After placing a magnetic socket (figure 2), properly seat perpendicularly the screwgun to the material base (shingle), applying pressure on it (figure 3A).

Use the progressive trigger until to stabilize the drill in the hole, and then apply full speed.

When the stop gets in touch with the shingle (figure 3B), the screwgun will activate the clutch system.

When this happen, the application will be completed.


It is common to find cases where operators pull out the stop of the screwgun, or even adapt the magnetic socket in a drill. In this case, we are not responsible for the obtained result that will compromise the sealing system in our products.






Depth Regulation of Stop

Initially, it is necessary adjust the stop depth, so there is no crushing or under-tightening of the sealing washer.

Set a Manzato fastener in the socket installed in the screwgun. Set the stop, increasing or decreasing its depth, until it reaches the same height as the fastener head.

Do some experimental applications to have sure of the result. The sealing washer cannot present under- tightening or crushing. A light pressure on the sealing washer is enough to guarantee a full sealing.



Distinction between Normal and Stitch Fasteners

The normal fasteners have various measures with self-tapping points, numbers 2, 3, 4 and 5, which serve for fixing shingles to support purlins. The stitch fasteners have a unique measure (1/4-14x7/8) and drill point number 1, which have the purpose to join the shingles when there is overlap of it, since the thickness sum of both shingles are, at least, 1.00 mm.

Visually, the stitch fasteners have a thinner point than its thread (figure 9). This make the under shingle be pulled over the above shingle, performing a function we call “stitch” between the shingles.