Check the listing for details. M4-0.7 Knurled Thumb Nuts, 20Pcs 304 Stainless Steel High Head, Silver. Condition: New. Listed at 26.54 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 used with bolts, studs, and screws, 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, or just store them for your next install.Specification:Material: 304 Stainless SteelColor: SilverThread Size: M4-0.7Head Dia: 16mm/0.63 inchSmall End Size: 8 x 3.5mm/0.31 x 0.