Общий каталог Yamawa 2022 - 2023 - страница 446

④ Hand Tap Series Overall length L Thread length ℓ Thread + Neck ℓn length Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk JIS IHT Spiral Fluted Taps (for blind hole) ① JIS Hand Taps for General Purpose Spiral Fluted Taps (for through hole) ② Specification M10×1.5 UNC Chamfer: 5P Tap dril size 8.5mm(ref.) <2D Spiral Pointed Taps (for through hole) Oxide ③ Recommended Tapping Speeds depending on Materials Low carbon steels Medium carbon steels 低炭素鋼 中炭素鋼 〜 5 〜 5 Hand Taps ( m / min ) ( m / min ) ④ Blister Pack Product Features How to use IHT ●IHT is for hand tapping and for re-threading, and is used for ●Start tapping after boring holes corresponding to the thread Cemented Carbide Taps ⑤ both through hole and blind hole. size by using drills (note: For drill sizes, refer to drill sizes ●Use for threading of the iron (SPC or SS400) products used shown in the bored hole size table.) in our daily life. ●On hand tapping, operate tapping in an upright position ●Surface treated. Oxidization, the most suitable surface parallel to bored holes by using tap wrenches. treatment for iron products. ●During tapping, please use tapping oil. Roll Taps ●Suitable for internal thread cutting in small quantity, such as ⑥ tapping of test pieces. ●The 5 thread chamfer is recommended for through holes and 2 thread chamfer is recommeded for blind holes. Special Thread Taps Simple Inspection Tools ⑦ When hand tapping, always use Machine tapping with drilling Through hole = 5 thread type Blind hole = 2 thread type tap wrench machine Pipe Taps ⑧ ■Table for bored and drilled hole sizes unit：mm Minor Diameter of Internal Thread Size Thread Size Minimum Maximum Tolerance Drill Size Engagement Tolerance 6H (2nd Class) 7H (3rd Class) M3 × 0.5 2.459 2.599 2.639 2.6（2.5） 74%（92%） M4 × 0.7 3.242 3.422 3.466 3.4（3.3） 79%（92%） Thread Mills Premium Thread Mills M5 × 0.8 4.134 4.344 4.384 4.3（4.2） 81%（92%） ⑨ M6 × 1 4.917 5.153 5.217 5.1（5.0） 83%（92%） M8 × 1.25 6.647 6.912 6.982 6.9（6.8） 91%（89%） M10 × 1.5 8.376 8.676 8.751 8.6（8.5） 86%（92%） note1) Recommended drill sizes shown in this table are for internal threads of 7H class（3rd class), and are selected from the standard drills available in the market. note2) Drill sizes shown in brackets in this table are for such case as the drilling has oversize cutting Dies tendency or for internal threads of 6H class（2nd class). ⑩ 【Related products】 Shank adjuster ●For deep hole tappings, please use shank adjusters. ●There is only a one touch motion required to detach and attach Center Drills Centering Tools the I series taps (IHT/ISP/IPO) from or to the shank adjuster. ⑪ ＊For details of shank adjuster, refer to ⑦-77 JIS Obtainable from ④-49 video site shown in right