EG STI Taps Intro AL-SP STI MS Material Specific Series SP Spiral Fluted Taps for Helical Coil Wire Screw Thread Inserts on Aluminium Alloys FEATURES SL HSS-E NI 2.5PTHCHT Material specific for blind hole application.Specific design and NI treatment allow stable and longlife on Aluminium, Aluminium casting and die-casting. PO Recommended Tapping Speeds Depending On Materials ISO Vc (m/min) N1 10÷25 H N2 10÷25 H ST N3 10÷25 H N4 10÷25 H H 1st choice I suitable ROLL JIS-AL-SP STI TYPE: SP_001 TYPE: SP_013 CARBIDE DCON K KDCON THLLONGLU LKLS K THL LS LK K LF LF HAND TAPS EG (STI) JIS SPECIAL THREADS, GAUGES THREAD MILLS DIES CENTER DRILLS Technical info 520