5pcs M3 to M8 Nitride Screw Tap Metric Spiral Hand Thread Screw

100% brand new and high quality.The application of nitriding enhances the abrasion performance, surface hardness, fatigue limit, anti erosion ability of the tapping.Sharp and durable, the cutting edge strength is high.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.Specifications:Colour: Black Material: HSS6542Surface treatment: NitridingHardness: 35 HRCThread direction: rightPackage Included: 5pcs Nitriding HSS screw thread tap(3,4,5,6,8MM)Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.