Check the listing for details. M4 Knurled Thumb Nuts 50pcs Nickel Plated Flat Head Blind Hole, D8mm x H6mm. Condition: New. Listed at 14.19 USD. These knurled thumb nuts are suitable for use in mechanical equipment, furniture fastening, 3D printing, electronic equipment, DIY projects, and other electrical or industrial products. these knurled thumb nuts secure components with ease, They are widely used in industrial building materials, food industry, vehicle and ship parts, etc. These knurled nuts are easy to install and can be firmly fixed in various components.Specification:Material: Carbon Steel Nickel PlatedFastener Type: Knurled Blind HoleThread Size: M4Pitch: 0.7mm/0.03inchSize: 8*6mm/0.31*0.24inch(D*H)Package Included: 50 Pcs x Knurled Nuts Advantages:Made of carbon steel with a nickel-plated surface, exquisite appearance, good anti-rust and anti-oxidation performance, high hardness, and long service life.