Internal thread sleeve IST, electro-galvanized. The Upat internal thread anchor IST is an accessory in chemical fastening that offers maximum flexibility for anchoring with screws featuring metric threads or threaded rods, due to the possibility of flush surface disassembly. This anchor, in electro-galvanized design, is particularly suitable for indoor fastening in a wide variety of building materials with all injection mortar and cartridge systems from Upat. The most economical use of the anchor is in combination with the cartridge UKA-3. When many fastening points are processed consecutively, it is advisable to combine it with the injection mortar cartridges. During installation with the mortar cartridge, the internal thread anchor is set using a rotary hammer with a striking action. In the setting process, the mortar cartridge is destroyed, mixed, and activates the mortar mass. When installing with injection mortars, the anchor is manually pushed into the drill hole with slight rotational movements. The various mortars bond the IST fully with the wall of the drill hole. The system with the internal thread anchor IST is particularly frequently used for the temporary fastening of machines.