Heads
PAN HEAD
It is the most common and allows the use of any type of recess.
COUNTERSUNK HEAD
It adapts to conical or countersunk holes, finding space in the softest materials during the tightening phase.
FLANGED MUSHROOM HEAD
This type of screw is used to:
– assemble very thin materials;
– give a better aesthetic effect to the part assembled;
– cover slotted holes with a larger diameter than the standard size of the pan head.
The flange can have different diameters according to the application to be made.
HEXAGONAL WITH COLLAR
For applications where a high tightening torque is required. It guarantees an excellent distribution of the axial sealing thrust, protecting the surface of the piece to be assembled from contact with the socket.
SERRATED UNDERHEAD
These screws satisfy the need for fasteners with higher vibration resistance because the screw drive generated by fastening produces a locking effect.
Also recommended for earth contacts on electrical parts.
Recesses
PHILLIPS ‘PH’ RECESS
The standard head for screws.
POZIDRIVE ‘PZ’ RECESS
The particular shape of the recess and the larger number of points of contact between the head and the bit reduce the ‘come-out’ effect and the wear of the bit itself.
‘TX’ SIX LOBE RECESS
Due to its vertical walls, it eliminates the ‘come-out’ effect.
‘TA’ TAMPER-PROOF
Indicated for applications in which unscrewing must be performed exclusively by qualified staff.
HEXAGONAL
Indicated where the application of high tightening torque is required.
HEXAGONAL WITH COLLAR
The collar increases the supporting surface, protecting the part from the action of the tightening bush at the same time.
‘TX’ SIX LOBE COMBI – SLOTTED RECESS
Combines the universal nature of the slotted recess with the characteristics of the six lobe recess.
COMBI CROSS – SLOTTED RECESS
Combines the universal nature of the slotted recess with the characteristics of cross recesss.