Special screw forging

Standard and custom-made screw forging

Over the years, we have specialised in forging special o or non-standard and custom-made screws of any shape, also according to the customer’s design.

Our screw heads have various shapes including: cylindrical, hexagonal, bi-hexagonal, torx, hexagonal hollow head, hammer head, square head, with the possibility of diameters from 4 mm to 180 mm. The thread is made by rolling or by shaving. Lengths range from 35 mm to 1200 mm.

It is possible to forge screw heads up to 350 mm in diameter.
We can make rolled threads and carry out mechanical processes such as: drilling, threading, turning.
The product is aimed at all mechanical manufacturers who use locking systems with special scr.

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special screw forging
special screw forging
special screw forging
special screw forging
viti speciali

Special screws can be forged from different materials: from steel alloy tostainless steel, aluminium and nichel and titanium alloys.
We use: steel classes 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 9.8, 10.9, 12.9.

Thermal treatments
We can perform thermal treatments of reclamation, normalization and annealing for carbon steels, solubilization and aging treatments depending on the type of alloy used.
After thermal treatments sandblasting can be performed.

Screw surface finish
We can perform galvanising, phosphating, nickel plating, chrome plating, burnishing, Geomet and painting.

Product applications:
All the applications that require locking with screws,we currently serve the automotive, earth moving, agricultural, wind power, oil and gas, elevators, railway and cable transport systems sectors.

Resistance, quality and uniformity

contact us to find out more

Phone: 0365.31149 – 373772 / E-mail: info@bertoloniebotturi.it