LBY 30pcs Knurled Thumb Screws, M4 x 10mm Flat Knurled Head Fully Threaded, Carbon Steel Galvanized (Double Layer Step)

LBY Flat Knurled Head Fully Threaded Thumb Screws Bolts Fastener (Double Layer Step) ● Product: - M4 x 10mm - Material: Carbon steel - Main Color:Silver Blue -Surface treatment:Galvanized ● Package: - M4 x 10mm - 30pcs ● Description: - Carbon steel construction and galvanized coating ensure long-lasting performance. - The knurled head allows for easy hand-tightening, reducing the need for tools. - The fully threaded design ensures a strong and secure fit in a variety of materials. - The double layer step design enhances grip and durability. - Widely used in medical equipment, chassis circuits, electronic equipment, communication equipment, ships etc.