【✔】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..
tolerance: H7. Features just the base substrate without any additional coatings, good for wide ranges of applications.
Material: High-speed steel tools are with combination of hardness and toughness for wear resistance, suitable for general purpose applications.
Applications: Cut and remove the thin layer metal on hole surface that has been processed, mainly to improve the precision of holes and reduce the surface roughness.
Features: Straight flute tools allow chips to collect in the flutes and can make shallow cuts in most applications.
How to Use: Chucking reamers (machine reamers) are used on lathes, drill presses and screw machines. Designed for accurate reaming in stainless steel, aluminum, copper, alloy, plastic.