Tool-flo 93401620D Indexable Threading Toolholder 1x1 in

Product Description

The TOOL-FLO 93401620D is an external, right-hand indexable threading toolholder designed for precision thread-cutting and grooving operations on CNC lathes and turning centers. Built in the FLSR series, it accepts FL 4R inserts secured by a clamp-style holding method. The shank measures 1 inch wide by 1 inch tall with a 6-inch shank length and an overall length of 6 inches. Maximum depth of cut is 0.29 inches, and the back-of-bar to cutting edge dimension is 1.25 inches. No coolant-through or coolant entry is featured on this configuration. Machinists and toolroom technicians use this holder for external threading passes on ferrous and non-ferrous workpieces.

This toolholder is suited for external threading and grooving applications in production and job-shop turning environments. Its right-hand orientation positions the cutting edge for standard left-to-right thread cutting on a conventional lathe setup. The multi-use capability allows a single holder to serve both threading and grooving operations, reducing tooling changeovers. It is appropriate for use on CNC turning centers and manual lathes where a 1-inch square shank toolholder can be properly clamped in the turret or tool post.

Key Features

• External, right-hand thread cutting orientation for standard lathe threading operations
• FLSR series, compatible with FL 4R indexable inserts
• Clamp-style insert holding for secure, repeatable edge positioning
• Multi-use design supports both threading and grooving applications
• Maximum depth of cut: 0.29 inches
• No coolant-through configuration - suited for dry or flood-coolant setups where coolant is applied externally

Compatibility

Designed for use with FL 4R indexable inserts in the FLSR toolholder series. Fits tool posts and turret stations that accept a 1-inch square shank toolholder.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the lathe or turning center is fully powered down and the turret is locked before mounting or removing toolholders. Confirm that the insert is properly seated and the clamp screw is secured before resuming cutting operations. Follow the machine tool manufacturer's guidelines for shank clamping length and overhang to maintain rigidity and avoid chatter.