Set of 8 Knob Nuts M4 Carbon Steel Nuts High Head Through Hole for 3D Printer Parts Black ⭐️Anonymous Delivery & Free Shipping⭐️ Please see the actual photos for the condition of the product ♫ "#Yacchan's Product List is Here ✨" [Thread Size] M4: Pitch: 0.7mm/0.03"; Large Diameter: 12mm/0.47"; Small Diameter: 7mm/0.28"; Total Thickness: 8mm/0.31". [Advantages] Knob nuts are designed with sharp, clean, compact, and precise threads, making them less likely to deform or slip during the rolling process. [Ease of Use] The adjustment nuts are designed with a knobbed surface and a clear slotted head, allowing for easy tightening, installation, and removal by hand. No tools are required. [Wide Applications] These round knob fasteners are widely used in the machinery industry, furniture fixing, 3D printer beds, and other electrical and industrial products. 20-18 065