M36 ; thread pitch; 4mm, spanner size; 55mm. M1. 6; thread pitch; 0. 35mm, spanner size; 3.2mm. A2 Stainless Steel Half Nuts. Half nuts are often used on top of a standard full nut to lock it in place.
M4 M5 M6 M8 M10 M12 SOLID BRASS HALF NUTS THIN HEXAGON LOCK NUT DIN 439
M5 Stainless Steel Half Nuts / Thin Nut / Lock Nuts Pack of 10 (Free P&P)
FINE THREAD PITCH HALF NUTS HEXAGON THIN LOCK NUT METRIC A2 STAINLESS STEEL
M22 / 22mm STAINLESS STEEL A2 HEXAGON HALF / LOCK / THIN NUTS FOR BOLTS SCREWS
M14 / 14mm STAINLESS STEEL A2 HEXAGON HALF / LOCK / THIN NUTS FOR BOLTS SCREWS
