55° Taper Pipe Thread Tap with Cylindrical Key‑Slot Shank adopts titanium nitride (TiN) surface coating. It complies with GB/T7306.2 and ISO 7‑1:1994 standards. The cylindrical shank with key‑slot design enables stable clamping on special machine tools. Built for tapping internal threads on high‑temperature and high‑pressure pipeline connectors requiring thread sealing.
•GB/T7306.2
•ISO 7‑1:1994
1.TiN Titanium‑Nitride Coating: Golden surface treatment, improves surface hardness, wear resistance and tool service life, suitable for heavy‑duty high‑temp & high‑pressure working conditions.
2.Cylindrical shank with key‑slot: Key‑slot cylindrical shank structure, anti‑slip torque transmission, perfect fit for special machine tool holders, avoids shank slipping during high‑torque tapping.
3.55° thread angle,1:16 taper: Conforms to British 55‑degree pipe thread standard, delivers reliable self‑sealing performance for pipe joints.
4.Multiple flute options: 3‑flute,4‑flute,6‑flute configurations, stable chip evacuation for high‑pressure pipeline fitting production.
5.Full‑size range: Covers PT1/8 ~ PT2, meets diverse high‑temperature high‑pressure connector machining requirements.




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