M20 Hex Jam Nuts (DIN 936) - Zinc Plated Mild Steel (Grade 4.6)
Buy Hexagonal nut DIN 936, strength class 04 galv online | RECA Online-Shop
100pcs) DIN 936 M20X1.5 Hexagon Thin Nuts with Fine Pitch Thread A2 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP0936220-15: Amazon.com: Industrial & Scientific