Seco 00086856 Indexable Threading Toolholder Internal Rh

Product Description

The SECO 00086856 is an indexable threading toolholder designed for internal threading and turning operations on CNC lathes and turning centers. Built from steel, this right-hand holder belongs to the Snap Tap series and accepts 09NR inserts secured by a screw-holding method. The shank measures 0.691 inches in height and 0.707 inches in width, with a shank length of 4.75 inches and an overall length of 5.5 inches. A minimum bore diameter of 0.4 inches makes it suitable for small-bore internal threading work. Coolant-through capability with axial concentric entry supports chip evacuation and tool life in production environments.

This toolholder is intended for metalworking shops running internal threading cycles on lathes and turning centers. It handles both threading and turning applications, making it a multi-use tool on the same setup. The 0.75-inch head length and a center-to-cutting-edge dimension of 0.2 inches are suited to tight bore entry conditions. The Snap Tap series is a common choice for machinists needing reliable insert indexing on internal thread profiles in steel, aluminum, and similar machinable materials.

Key Features

• Internal right-hand threading and turning in a single toolholder
• Screw-held 09NR insert compatibility for secure, repeatable indexing
• Coolant-through design with axial concentric entry for improved chip control
• 0.4-inch minimum bore diameter enables small-bore internal threading
• Steel construction provides rigidity in continuous and interrupted cut conditions
• Multi-use tool supports both threading and turning operations without changeover

Compatibility

Designed for use with 09NR series inserts. The 7/32-inch insert inscribed circle and SN toolholder style are standard references for this insert family. Verify insert grade and thread profile against the specific thread form required before ordering.

Installation Notes

Installation and setup should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and locked out before mounting or changing toolholders. Confirm shank dimensions match the turret or boring bar holder bore before installation. Follow the machine tool and insert manufacturer torque guidelines when securing the insert screw to avoid overtightening.