Original Wolf Garten part no. 0016641 — domed (cap) hexagon nut, M6 (DIN 1587). This small but important fastener replaces the domed cap nut used on handle/holm and assembly points of several Wolf Garten power models; it features an M6 × 1.0 metric thread, a width-across-flats (spanner) of 10 mm and an overall height around 6 mm per DIN 1587 cap‑nut dimensions, so it fits exactly where an M6 domed nut is specified.

Example models shown in Wolf‑Garten parts diagrams that use part 0016641 include Power Edition 40 HA (4055080), Power Edition 46 BA (4658000), Power Edition 53 QRA (4237000) and the WE 430 spreader (5450000); the same nut also appears in parts lists for a range of Esprit and other mower/hand‑assembly diagrams. Use this original Wolf Garten nut to restore the finished appearance and secure fastening of your component to original specification.