Spiral Fluted Taps (for blind hole)Spiral Fluted Taps(for through hole)Spiral Pointed Taps(for through hole)Hand TapsCementedCarbide TapsRoll TapsSpecial Thread TapsSimple Inspection ToolsPipe TapsThread MillsPremium Thread MillsDiesCenter DrillsCentering Tools JIS ⑥ Roll Tap Series Overall Thread Thread + Neck Shank Shank Size of Length oflengthlengthlengthlengthdia.squaresquareLℓℓnℓsDsKℓk JIS ① N+RZ N- RZ Roll Taps for Steels ② Specification 〜 ■N+RZ/N-RZ are the forming taps suitable forferrousmaterialssuchascarbonsteels,alloy steels, and normal steels. ③ Oxide Recommended Tapping Speeds depending on Materials ・Product symbol is distinguished depend on the size. Low carbon steels Medium carbon steels N+RZ ~ M6 (coarse thread) 低炭素鋼 中炭素鋼5〜155〜15 N−RZ ~ M6 (fine threads),M7 ~ , all U, all STI ④ (m/min) (m/min) TYPE:1 ⑤ ⑥ TYPE:2 TYPE:3 ⑦ TYPE:4 TYPE:5 ⑧ ⑨ TYPE:6 TYPE:7 ⑩ ⑪ JIS ⑥-13