Features: Angle of thread is 60 degrees. ; The crest is flat and the thread has clearance at the root allowing external thread and internal thread to engage well. ; Larger root radius and lower thread height enable easy screw thread processing and increase thread screw strength. ; The major diameter of external thread and pitch are specified by a simple numerical value (most commonly measured in millimetres). ; TAPER TAPS have a lead of eight threads and are used as a starting tap in difficult or high precision holes. ; Manufactured from HSS this general purpose tap is designed for use in medium tensile materials and is for hand or general machine use. ; Specifications:Diameter8 mmPitch1.25 mmLeadingTaperOverall Length72 mmTapping Drill6.9 mm