7pcs M3-M12 HSS Nitriding Coated Screw Tap Metric Right Hand Spiral Screw Thread Tap

Specification:  Material: HSS;  Surface treatment: Nitriding Treatment;  Diameter of Head: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm;  Thread: M3*0.5, M4*0.7, M5*0.8, M6*1.0, M8*1.25, M10*1.5, M12*1.75;  Quantity: 7pcs     Features:  - The application of nitriding enhances the abrasion performance, surface hardness, fatigue limit, anti erosion ability of the tapping;  - Small resistance, smooth chip removal, smooth cutting surface, no residue, with good machinability, it can tap to the button of blind hole;  - Flexible to be use, processing efficiency, good stability, safe and reliable, widely used, low processing cost, can be applied to a variety of jobs.     Applicable Workpiece:  - tensile strength 750N / mm 2 or less the low-carbon steel, copper, aluminum,alloy;  - anti-bonding strength 600 ~ 900N / mm 2 the high-carbon steel, alloy steel, bronze, etc.     Package Included:  1 x Screw Thread Tap set (7pcs)     Note:   1.Please allow 1-3mm error due to manual measurement. please make sure