Vargus 66270 Internal Threading Toolholder Rh Nvr 3/8 in

Product Description

The VARGUS 66270 is an indexable internal threading toolholder designed for right-hand cutting operations on lathes and turning centers. Built in the NVR toolholder style, it accepts 2IR series inserts secured by a screw-holding method for positive insert registration and repeatable thread form accuracy. The shank diameter is 3/8 inch with a decimal shank height of 0.355 inches and an overall length of 2.953 inches. Weighing 0.482 pounds, this toolholder is a compact, no-coolant unit suited for machinists and toolroom technicians running internal threading passes on bores and threaded features.

This toolholder is used for cutting internal threads in bore applications across job shop, production, and maintenance turning operations. The right-hand configuration is suited for standard lathe setups where the tool feeds from right to left along the workpiece. The 1/4 inch insert inscribed circle and 2IR insert compatibility make it appropriate for threading smaller internal diameters where clearance is a factor. It is a single-purpose threading tool and is not rated as a multi-use holder.

Key Features

• NVR toolholder style for internal threading applications
• Accepts 2IR series indexable inserts with 1/4 inch inscribed circle
• Screw insert holding method for secure, repeatable insert seating
• Right-hand cutting orientation for standard lathe setups
• 3/8 inch shank diameter with 2.953 inch overall length
• No coolant-through design; operates without internal coolant delivery

Compatibility

Designed for use with 2IR series indexable threading inserts with a 1/4 inch inscribed circle. Compatible with lathes and turning centers that accept 3/8 inch shank toolholders in internal threading configurations.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Secure the toolholder in the turret or tool post according to machine tool manufacturer torque and alignment specifications. Ensure the machine spindle is fully stopped and the machine is locked out before mounting or changing inserts. Verify insert seating and screw torque before resuming cutting operations.