ITEM NAME:10Pcs M4 Stainless Steel A2 Nylon Collar Insert Self-lock Nuts Bolts Screws Discription: Type: Nylon Insert Lock Nuts Material: Stainless Steel Size Chart: M3 M4 M5 M6 M8 M10 M12 Thread Diameter 3mm 4mm 5mm 6mm 8mm 10mm 12mm Thread Pitch 0.5mm 0.7mm 0.8mm 1.0mm 1.25mm 1.5mm 1.75mm Package Includes: 10x Nylon Nuts SKU: DMO0011857714019332.M3 M4 M5 M6 M8 M10 M12. Type: Nylon Insert Lock Nuts. 10x Nylon Nuts. Material: Stainless Steel. SKU: DMO0011857714019332. Size Chart.