Internal Tool 20-1205 Interior Grooving Tool Solid Carbide

Product Description

The INTERNAL TOOL 20-1205 is a solid carbide interior grooving tool designed for cutting internal grooves in small-diameter bores. Built from micrograin solid carbide, it delivers precise groove geometry in a compact form factor suited to tight bore work. The tool cuts in a right-hand direction and produces a groove width of 0.063 inches with a minimum hole diameter of 0.125 inches and a maximum hole depth of 0.375 inches. The overall length is 3.0 inches with a shank diameter of 0.0625 inches (1/16 inch) and a shank length of 1.625 inches. Machinists and toolroom operators working on small internal features rely on this tool for consistent, repeatable groove profiles.

The 20-1205 is intended for interior grooving applications in small bores. It is well suited to precision machining environments where bore diameters are at or near the minimum 0.125 inch threshold. Typical applications include snap-ring grooves, O-ring grooves, and relief cuts in cylindrical bores machined on CNC lathes or manual turning centers. The full-radius profile and solid carbide construction make it appropriate for both ferrous and non-ferrous workpiece materials where fine surface finish and dimensional accuracy are required.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance in small-bore grooving
• Right-hand cutting direction for standard lathe rotation
• Full-radius groove profile for consistent groove geometry
• Minimum hole diameter of 0.125 inches enables work in very small bores
• Maximum hole depth of 0.375 inches with a matching projection of 0.375 inches
• No undercut geometry and no tool-bit adjusting screw for a fixed, reliable cutting position

Compatibility

Designed as an OEM-style interior grooving tool for use in precision turning applications requiring a 1/16 inch shank and a minimum bore entry of 0.125 inches.

Installation Notes

This tool is installed and used by machinists on CNC or manual turning equipment. Secure the shank firmly in a compatible boring bar holder or toolpost before operation, and verify that the shank diameter and projection clearance match your toolholder specifications. Always bring the spindle to a full stop before changing or adjusting cutting tools. Follow your shop's standard speeds and feeds guidelines for solid carbide tooling in the bore diameter and material being machined.