Vargus 66347 Indexable Threading Toolholder 0.25in Rh

Product Description

The VARGUS 66347 is an indexable threading toolholder designed for internal threading operations on lathes and turning centers. Part of the Mini 3 series, this right-hand toolholder features a rectangular shank measuring 0.21 inches in height and 0.25 inches in width, with an overall length of 4 inches and a shank length of 2.98 inches. It accepts 4.0KIR inserts secured by a screw-clamp holding method and includes through-coolant capability for improved chip control and tool life during threading cuts. Machinists and toolroom technicians working with small-bore applications will find this holder well suited to precision threading work.

The 66347 is built for internal threading in small-diameter bores, with a minimum bore diameter of 0.24 inches. Its compact Mini 3 series profile makes it appropriate for Swiss-type machines, CNC lathes, and multi-axis turning centers where clearance is limited. The CNVRC toolholder style positions the insert for right-hand cutting, and the head length of 1.02 inches supports a maximum depth of cut of 1.02 inches. Back-of-bar to cutting edge measures 2.54 mm, keeping the cutting edge precisely located within tight bore constraints.

Key Features

• Internal threading application with right-hand cutting orientation
• Accepts 4.0KIR indexable inserts secured by screw-clamp method
• Through-coolant capability for chip evacuation and extended insert life
• Minimum bore diameter of 0.24 inches suits small-bore threading work
• CNVRC toolholder style in the compact Mini 3 series
• Overall length of 4 inches with a shank length of 2.98 inches

Compatibility

Designed to accept 4.0KIR series indexable threading inserts. Confirm machine spindle clearance and insert seat specifications before installation.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and locked out before mounting or changing toolholders. Secure the shank in the turret or tool block to the machine manufacturer's recommended clamping torque using appropriate toolholder hardware. Verify insert seating and screw torque before initiating a threading cycle.