M2 M2.5 M3 M4 M5 M6 -M16 SUS304 Stainless Steel Extended Cylindrical Flat Knurled Hand Screw Nut Mesh Nut Adjustment NutsHome Improvement > Hardware1,93 USD (≈ 1,72 €)1,97 USDDisponibileSold by AliExpress WWVai al negozio