product description:
. All-steel design with chromium-plated finish for the highest durability.
. Material: high speed steel 4241/ bearing steel, suitable for soft metal, such as aluminum plate, iron plate. High speed steel 6542, suitable for ordinary stainless steel and other hard materials.
. Metric Thread Size:1# M8×1.25,#2 M6×1,#3 M5×0.8,#4 M4×0.7,#5 M3×0.5.
. Spiral Tap the crumbs into a spiral up chip evacuation, it is more suitable for the processing of blind holes and sticky materials processing.
. High hardness, fast cutting, wear high temperature.
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