Carmex SIR0205H06 Indexable Threading Toolholder

Product Description

The CARMEX SIR0205H06 is an internal, right-hand indexable threading toolholder designed for precision thread-cutting operations on lathes and turning centers. Built to the SI toolholder style, it accepts 06IR inserts secured by a screw-clamp holding method for repeatable, rigid insert positioning. The shank measures 0.205 x 0.205 inches with an overall length of 4.0 inches, making it well suited for small-bore threading applications. A minimum bore diameter of 0.236 inches allows access to tight internal features. Licensed machinists and CNC operators rely on this style of toolholder for consistent thread form in production and job-shop environments alike.

This toolholder is intended for internal threading operations where a compact shank profile is required. The right-hand cut orientation suits standard lathe setups running conventional spindle direction. With a neck diameter of 0.200 inches and a head length of 0.470 inches, the SIR0205H06 provides clearance in close-tolerance bores. It is applicable in metalworking operations requiring repeatable thread profiles across multiple parts. No coolant-through or coolant entry is incorporated in this model, so external coolant supply or dry cutting conditions should be planned accordingly.

Key Features

• Internal, right-hand SI-style toolholder for indexable threading inserts
• Accepts 06IR inserts with a 5/32-inch inscribed circle via screw-clamp retention
• 0.205 x 0.205 inch shank with 4.0-inch overall length for reach in small bores
• Minimum bore diameter of 0.236 inches for tight internal threading applications
• Neck diameter of 0.200 inches and head length of 0.470 inches for clearance in confined bores
• No coolant-through design; compatible with external coolant or dry cutting setups

Compatibility

Designed for use with 06IR indexable threading inserts with a 5/32-inch inscribed circle. Verify insert thread form and pitch range against job requirements before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Secure the toolholder in the machine turret or boring bar holder according to the machine tool manufacturer's torque and clamping specifications. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing or indexing inserts. Confirm shank clamping length meets minimum engagement requirements to prevent tool pullout during cutting.