uxcell M6 304 Stainless Steel Self-Locking Hex Lock Stop Nut Silver Tone 10pcs Thread Size: M6; Product Name: Hex Lock Nuts Material: 304 Stainless Steel; Weight: 20g Package Content: 10pcs x Hex Lock Nuts; Main Color: Silver Tone Height: 6mm/0.24"; Hex Size: 10mm/0.4"(Hex.Width) Grade: 4.8