B.C.B. SRL operates since years throughout the country from its factory located in Via Massari Marzoli No. 4 - Busto Arsizio (VA).

The owner Mr. Alessandro Colombo, together with his two children Giancarlo and Barbara, is responsible for the company management and production.

The company is specialized in the production of normal and special bolts hot-pressed for high and very high resistance.

Expertice and autonomy

B.C.B. SRL is able to offer customized solutions thanks to its long experience in its field, an important reason to consider it a reliable reference for a diverse and demanding clients. The company is fully independent in the management of manufacturing processes and control of its products.

Thanks to the professionalism of the company staff and the efficient network of suppliers certified according to the latest standards, B.C.B. SRL is able to ensure the quality of its supplies. The quality of the products is ensured through a serious and constant control of the raw materials used, heat and surface treatments, geometric and dimensional accuracy.

Quality and speed

With its traditional professionalism in services provided and fast delivery, B.C.B. SRL can definitely be a partner of absolute confidence.

Materials used
  • C40
  • 41CR4
  • 42CRM04
Hardness available
  • 8.8
  • 10.9
  • 12.9
  • B7
  • B7M
  • L7
  • L7M
  • Other measures on request


  • Production from 8 to 36 mm diameter
  • Screws from ø 8 to ø 36; 700 mm maximum length
  • Inch sizes on request
  • Studs: UNI-DIN-ASTM
  • Metal screws, captive screws
  • Special design on request
  • Fast delivery
  • Hardening and tempering treatments, burnishing, white and yellow zinc-plating, geomet, dehydrogenation