Check the listing for details. 10Pcs Knurled Thumb Nuts, M3 M4 M5 M6 M8 High Head Female Threaded, Silver. Condition: New. Listed at 21.54 USD. Description:Material: Our knurled thumb nuts are made of 304 stainless steel material that is highly hard, has no rust, and has corrosion resistance, with a flat head and round knurled body, which can be used for a long time.Advantages: The head has a knurled design to increase friction, and it is easy to install and remove by hand without any tools. The thread is deep, the tooth pitch is uniform, and the fastening force is good.Application: These knurled thumb nuts are widely used in the machinery industry, furniture fastening, 3D printing parts, etc. Great for items that need quick adjustments, use them to replace old ones.Specification:Material: 304 Stainless SteelColor: SilverThread Diameter: 3mm/4mm/5mm/6mm/8mmOutside Diameter: 12mm/16mm/20mm/24mm/30mmHeight: 7.5mm/9.5mm/11.5mm/15mm/18mm Package Included: 10pcs x Knurled Thumb Nuts.