The 190.503A floating tap holder with extension and compression, Morse taper MT3, is designed for threading operations on lathes, machining centers, drilling machines and transfer lines. The system provides controlled axial movement in both directions through internal springs, with extension stroke E 12 mm and compression stroke C -4 mm, combined with slight radial float. This design compensates synchronization errors and misalignment between spindle and workpiece, especially during reversal. It improves thread quality, reduces tool load and minimizes tap breakage risk. Main dimensions: L 86 mm, H 56 mm, D 58 mm, F 25 mm. Manufactured from hardened and ground alloy steel for industrial applications.