Seco 00072538 Indexable Threading Toolholder 3/8 Shank

Product Description

The SECO 00072538 is an external, right-hand indexable threading toolholder from the Snap Tap series. It accepts 16ER inserts with a compatible insert size code of 1.5 and uses a clamp-style insert holding method for secure, repeatable positioning. The shank measures 0.375 x 0.375 inches with a shank length of 2.1 inches and an overall length of 3.0 inches. Designed for threading and turning operations on CNC lathes and manual turning centers, this toolholder is installed by machinists and CNC operators working with external thread forms. It is built without through-coolant, keeping setup straightforward for standard threading applications.

This toolholder fits external threading applications on lathes and turning centers where a 3/8-inch square shank is appropriate. The CE toolholder style and 16ER insert compatibility make it suited for a range of standard external thread profiles. It supports multi-use configurations, allowing operators to apply it across threading and turning operations in a single setup. Typical use cases include production threading on steel, aluminum, and similar machinable materials in job shop and production environments.

Key Features

• External threading application with right-hand cutting orientation
• Accepts 16ER indexable inserts with insert inscribed circle of 3/8 inch
• Clamp-style insert retention for secure, repeatable indexing
• 0.375 x 0.375 inch square shank fits standard tool post and turret pockets
• Multi-use design supports both threading and turning operations
• No coolant-through required — straightforward setup without internal coolant plumbing

Compatibility

Designed for use with 16ER series indexable inserts with a compatible insert size code of 1.5. Fits tool posts and turret pockets accepting a 3/8-inch square shank. Part of the SECO Snap Tap series for external threading applications.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Power down and lock out the machine before mounting or removing the toolholder from the turret or tool post. Seat the toolholder fully in the pocket and torque clamping hardware according to machine manufacturer specifications. Index or replace inserts with the spindle stopped and all machine motion arrested.