Heli-coil 3G-OTH-261981 — Technical Specifications

The HELI-COIL Screw Thread Insert STI Tap (Straight Flute) is a general-purpose STI tap designed for 1 1/8"-7 UNC threads, with an H4 / 3B tolerance and plug chamfer. It features 4 flutes and is manufactured under part number 8187-18. 3G Electric interprets demand and delivers this genuine industrial tool across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.