Silicon bronze fasteners are excellent for use in many marine and commercial applications which was made from copper with silicon added for strength.Silicon bronze is known as a high-strength alloy,having a several important factors including high conductivity,excellent corrosion resistant to sea water,gases,sewage and atmospheric conditions. Silicon bronze threaded rods(C65100,C65500) were made to ANSI,DIN,BS,etc. Dimension: diameter:4mm-25mm,Length:max 6 foot for example:10-24 x 3' / 6' 1/4-20 x 3' / 6' 5/16-18 x 3' / 6' 3/8-16 x 3' / 6' 1/2-13 x 3' / 6' 5/8-11 x 3' / 6' 3/4-10 x 3' / 6' 1-8 x 3' / 6' M5x0.8x1000 / 2000mm M6x1.0x1000 / 2000mm ....................... M24x3.0x1000 / 2000mm Manufacturing craft:rolling thread or turning threads