5pcs M3 M4 M5 M6 M8 Nitride Screw Tap Metric Spiral Hand Thread Screw Tap

Description: 5pcs M3 M4 M5 M6 M8 Nitride Screw Tap Metric Spiral Hand Thread Screw Tap Spiral wire tapping is a spiral type. Spiral wire tapping in tapping and to the spiral groove of the upward rotating effect, able to easily put iron discharge hole, in order to avoid iron residue or the blockage in the groove, resulting in a screw tap breaking edge crack. Specification: Material: HSS Color: Carbon black Type size Length M3 3mm*0.5mm 48mm M4 4mm*0.7mm 55mm M5 5mm*0.8mm 61mm M6 6mm*1mm 67mm M8 8mm*1.25 mm 70mm Features: -Growth in the service life and cutting out the highest accuracy of the thread. -Spiral screw is suitable for cutting materials with high toughness, and is not suitable for cast iron scraps into fine materials. -Easy to drill the bottom. -Fine cutting and the chips will not stay. Package Included: 5 x Screw Tap More Details: