Product Details:Color: SilverMaterial: 304 Stainless Steel 18/8Thread Type: Full ThreadThread Dia: M4Thread Length: 16/18/20/25/30mm (5 Sizes in 1, each sizes 20pcs)Hex Wrench Size: S2.5（M4）Package Content: 100pcs x Button Head Hex Socket Screws, 1pcs x Hex WrenchMaterial - Constructed with 304 stainless steel material with white washing treatment, these hex socket cap screws are of strong durability, has a bright appearance, is not easy to deform or corrode, and has a long service life than other steel or zinc plated fasteners.Feature - The button socket head cap screw is designed with an inner hex drive style and pan head, providing a higher torque and clamping force, as well as offering a wider bearing surface and high tensile strength.
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