m200 slotDIN 981 Slotted Round Lock Nut. Slotted Round Lock Nuts, also named Round lock nut, Slotted Round nuts, Shaft lock nuts, made of steel, M10-M200 from China lock nuts manufacturer.- M200 series for most standard carriers - M205 series for wide flange carriers: Base dimensions: 282.19 mm × 292.23 mm (11.125 × 11.5) Pod heht (without AK handle)