【✔】Set Includes 8 Most Used Sizes: M2(2.5) M3 M4 M5 M6 M8 M10 M12 【Metric, please See Picture 2 for Specific Dimensional Size】.
【✔】Made of 304 Stainless Steel Material, Very Good Corrosion Resistance, It Can Be Used in a Humid Environment.
【✔】Package Quantity: 400-Piece, All of Washers Will Be Packed in A Sturdy Transparent Plastic Case, Can Be Use for A Storage Box.
【✔】 A Lock washer exerts a spring force between the fasteners head and the substrate, which maintains the washer hard against the substrate and the bolt thread hard against the nut or substrate thread, creating more friction and resistance to rotation..
【High Speed Steel Tool】- High-speed steel straight shank tool is good for most general purpose applications, offering a combination of hardness and toughness for wear resistance.
【Round Shank】- Round shanks allow use with a wide variety of toolholding systems.
【Uncoated Tools】- Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications.
【Versatile Uses】- For use in a wide range of stainless steel, aluminum alloy, iron, copper, brass and metal materials.