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+RS N- RS Roll Taps for Non-Ferrous Materials ② Specification 〜 ■N+RS/N-RS are the forming taps suitable fornon-ferrous materials such as aluminum castings, aluminum diecasting and brass. ③ Nitride Recommended Tapping Speeds depending on Materials ・Product symbol is distinguished depend on the size. Wrought aluminum Aluminum alloy castings Zinc alloy castings N+RS ~ M6 (coarse thread) アルミ圧延材 アルミ合金鋳物 亜鉛合金鋳物5〜155〜155〜15 N−RS ~ M6 (fine threads),M7 ~ , all U, all STI ④ (m/min) (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 ⑥-25