Trapezoidal threaded nut ELRM 18X4 right gunmetal D40L36, round Features:. thread: 18x4 right Durchmessser: 40mm (D) Length: 36mm (L) material: Phosphor bronze 7Zn Manufactured to ISO 2901/2903 and DIN 103 tolerance 7H . Application:... - For manual or powered control - For small and medium speeds - For working under load The trapezoidal screw nut is a quality product from the European market leader. Other sizes and materials can be found in the shop!