Silicon Bronze C655 Nuts

Silicon Bronze C655 Nuts, Specifications & Dimensions

Silicon Bronze C655 nuts are internally threaded fasteners that mate with bolts and studs to form clamped joints. TorqBolt manufactures Silicon Bronze C655 nuts per ASME B18.2.2, ISO 4032/4033/4034, DIN 934/EN 24032, and DIN 6915 (heavy hex), in sizes M6–M100 and 1/4"–4".

Nut Height Categories

Locking Variants

For vibration-loaded joints, Silicon Bronze C655 nuts are available as nyloc, all-metal prevailing-torque (DIN 980), flange-serrated (DIN 6923), and castle / slotted (DIN 935, cotter-pin retention).

Mechanical & Certification

Silicon Bronze C655 nut threads are gauged per ASME B1.1 / ISO 965 to Class 2B / 6H. Proof-load testing per ASTM F606 verifies the nut develops the bolt's full strength without thread strip. Each lot ships with EN 10204 3.1 / 3.2 certificates. NACE MR0175 / ISO 15156 sour-service certification available.

Bronze Alloys (Phosphor, Silicon, Aluminium, Gunmetal, Leaded)

Bronze alloys are copper-based alloys with tin, aluminium, silicon, manganese, or phosphorus additions. Excellent bearing properties, marine corrosion resistance, and non-sparking + non-magnetic characteristics.

Phosphor bronze combines high yield + fatigue with seawater corrosion resistance. Silicon bronze (C65500) is marine-grade weldable. Aluminium bronze (C95400/C95500/C95800) achieves yield ~310-585 MPa with cavitation resistance, the workhorse for marine pump impellers and propeller hub bolting. Gunmetal is the historic naval bronze for valves and trim.

Bronze fasteners ship per ASTM B98 (rod/bar) and B584 (cast) with EN 10204 3.1 / 3.2 certificates and ASTM B66 ammonia stress-corrosion testing where service warrants.

Request a Quote for Silicon Bronze C655 Nuts

Get a quotation, lead time, and certification details. Reply within 24 hours, Monday-Saturday.

Or email enquiry@torqbolt.com directly · Call +91-22-6615-7017. We never share your details.