LinkMejor Knurled Thumb Nuts, 20Pcs M4x0.7mm Iron Round Knobs Fasteners for 3D Printer Parts, Silver Tone

Descriptions:Made of iron material that is high hardness, no rust and perfect corrosion resistance.This nut with knurled surface that can be easily tightened, assembled and disassembled by hand without any tools.Commonly found on 3D printer beds, machine tools, cabinets, toolboxes, great for crafting projects and things that require quick adjustments. Product Specifications:Material: IronColor: Silver ToneThread Size: M4Pitch: 0.7mmTotal Size: 11mm x 7.2mm/ 0.43" x 0.28" (D*H)Package Included:20 Pcs x Knurled Thumb Nuts