1 x 38 mm Lawnmower. Knife screw. -D (thread): 3/8" - 24 UNF = 9.5 mm. Left thread.
38mm Left Hand Thread Blade Bolt Husqvarna Mcculloch AYP 583117001 532181713
Universal Blade Bolt L/H Ø 3/8" 24UNF 112735695/1 Length 38mm - Left Hand Thread
Changor M10 Left Hand Thread Nut, Universal M10x1.25 Left Hand Thread Blade Nut Metal Accessories for Brush Cutter Trimmer
5Pcs Trimmer Strimmer Brush Cutter Left Hand Thread Nut Replace Left Hand Thread Nut Replace
Yuanpgky Double-Thread Spool for String Trimmers, 128 mm Diameter, 2.4 mm Thickness, M10x1.25 Left-Hand Thread, 5000 mm Length – Compatible with MFH5