Explanation of icons

High speed steelFor blind hole withSpiral pointed tap
through coolant holethrough hole use
High speed steelFor through hole withHand tap
(Cobalt HSS)radial coolant holethrough hole use

Hand tap

Powder HSSFor left hand threadblind hole use
Left hand
Ultra micro grainFor synchronizedSpiral fluted tap
cemented carbidefeedingthrough hole use

Number of threads Spiral fluted tap

Alloy steel on chamfer blind hole use

Center drills Low spiral

Oxidizingleft hand cutfluted tap
blind hole use
Oxide
Low spiral fluted tap
<2Dblind hole use
NitridingCutting lengthspecially for horizontal

Nitride tapping Stainless steels ステンレス鋼510 Specification Nitriding/Oxidizing Tapping Speeds

Nitride+Oxide

Coating

Coated