
Pipe Tap Series Overall length L Thread length ℓ Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk ⑧ DIN R-D G Spiral Fluted Taps (for blind hole) ① DIN Roll Taps for Parallel Pipe Threads, for General Purpose Spiral Fluted Taps (for through hole) ② Specification ■Suitable for tapping internal threads used for simple joining in thin steel sheets such as SPC, SPH, or soft steels such as SS400, S20C. Spiral Pointed Taps (for through hole) ③ Recommended Tapping Speeds depending on Materials Low carbon steels Medium carbon steels High carbon steels Alloy steels Stainless steels Aluminum alloy castings Zinc alloy castings 低炭素鋼 中炭素鋼 高炭素鋼 合金鋼 ステンレス鋼 アルミ合金鋳物 亜鉛合金鋳物 10 20 10 20 10 20 10 20 10 20 10 20 10 20 〜 〜 〜 〜 〜 〜 〜 Hand Taps ( m / min ) ( m / min ) ( m / min ) ( m / min ) ( m / min ) ( m / min ) ( m / min ) ④ TYPE:1 DIN376/DIN5156 Cemented Carbide Taps ⑤ Segment:1H Roll Taps ⑥ Size Class Code Chamfer L ℓ ℓs Ds K ℓk Lobe TYPE (mm) (mm) (mm) (mm) (mm) (mm) For G Threads G 1/8-28 - RVG0026NEBB 2P 90 19 46 7 5.5 8 8 1 G 1/4-19 - RVG0047NEBB 2P 100 21 51 11 9 12 8 1 Special Thread Taps Simple Inspection Tools G 3/8-19 - RVG0067NEBB 2P 100 21 51 12 9 12 8 1 ⑦ Number of oil grooves: G = 4 Pipe Taps ⑧ Thread Mills Premium Thread Mills ⑨ Dies ⑩ Center Drills Centering Tools ⑪ DIN ※ This product is different from JIS products in shape and dimensions, please be careful when using. ⑧-68