Since 1986 Trafilerie Gerosa has been producing drawn and rolled raw and annealed steel with and without phosphating, in diameters from 2 mm to 25 mm packed in hanks, coils and reels. Trafilerie Gerosa are aimed at users who produce bolts, screws and small metal parts. Since 1986 Trafilerie Gerosa has been producing drawn and rolled material in raw and annealed steel, with and without phosphatation, in diameter from 2 to 25 mm, supplied in the form of coils, bobbins and tubular carriers. This production is particularly suitable for bolts, screws and small metal parts. NEWS New site To make the most of the opportunities offered by the network and to build a closer dialogue with customers, Trafilerie Gerosa has updated its website. Via XXV Aprile, 13 - 23841 Annone Brianza (LC) - Tel .: +390341260522 - Fax: +390341575111 - VAT IT 001576460131 - E-mail: info@trafger.it

Contact Via XXV Aprile, 13 Annone Brianza Lecco 23941 Italy +390341260522 +390341575111 Contact Form Send an email. All fields with an * are required. Name * Email * Subject * Message * Send copy to yourself Send Email NEWS New site To make the most of the opportunities offered by the network and to build a closer dialogue with customers, Trafilerie Gerosa has updated its website. Via XXV Aprile, 13 - 23841 Annone Brianza (LC) - Tel .: +390341260522 - Fax: +390341575111 - VAT IT 001576460131 - E-mail: info@trafger.it

Strength classes RESISTANCE CLASSES Strength classes ø Thread mm Examples of usable steels Resistance class ø Thread mm Examples of steels which can be used 4.8 ≤ 35 C4C - C1OC 5.8 ≤ 15 C10C ≤ 35 C20E2C 6.8 ≤ 13 C20E2C 8.8 ** ≤ 11 19MnB4 - C23B - 35B2 - 28B2 ≤ 21 35B2 - 30MnB3 ≤ 27 34Cr4 - 34CrMo4 ≤ 27 41Cr4 - 42CrMo4 10.9 ** ≤ 16 35B2 - 30MnB3 ≤ 20 34Cr4 - 34CrMo4 ≤ 27 41Cr4 - 42CrMo4 12.9 ** ≤ 18 34Cr4 - 42CrMo4 ≤ 22 41Cr4 - 42CrMo4 ** Compulsory remediation ** Hardening and tempering compulsory NEWS New site To make the most of the opportunities offered by the network and to build a closer dialogue with customers, Trafilerie Gerosa has updated its website. Via XXV Aprile, 13 - 23841 Annone Brianza (LC) - Tel .: +390341260522 - Fax: +390341575111 - VAT IT 001576460131 - E-mail: info@trafger.it

RESISTANCE CLASSES Strength classes ø Thread mm Examples of usable steels Resistance class ø Thread mm Examples of steels which can be used 4.8 ≤ 35 C4C - C1OC 5.8 ≤ 15 C10C ≤ 35 C20E2C 6.8 ≤ 13 C20E2C 8.8 ** ≤ 11 19MnB4 - C23B - 35B2 - 28B2 ≤ 21 35B2 - 30MnB3 ≤ 27 34Cr4 - 34CrMo4 ≤ 27 41Cr4 - 42CrMo4 10.9 ** ≤ 16 35B2 - 30MnB3 ≤ 20 34Cr4 - 34CrMo4 ≤ 27 41Cr4 - 42CrMo4 12.9 ** ≤ 18 34Cr4 - 42CrMo4 ≤ 22 41Cr4 - 42CrMo4 ** Compulsory remediation ** Hardening and tempering compulsory NEWS New site To make the most of the opportunities offered by the network and to build a closer dialogue with customers, Trafilerie Gerosa has updated its website. Via XXV Aprile, 13 - 23841 Annone Brianza (LC) - Tel .: +390341260522 - Fax: +390341575111 - VAT IT 001576460131 - E-mail: info@trafger.it