Trapezoidal nut type FSF, flanged bronze, made of tin bronze EN 1982 CuSn7Zn4Pb7-C (CC493K). Suitable for continuous movement with good wear resistance. Good lubrication recommended. Available in diameters Tr 10 to Tr 50, in both right-hand (RH) and left-hand (LH) thread. Designed to couple with CONTI precision-rolled trapezoidal screws.