Kennametal 6770505 Threading Toolholder 3/4 Inch Right Hand

Product Description

The KENNAMETAL 6770505 is a right-hand indexable threading toolholder designed for laydown threading operations on CNC lathes and turning centers. Built to accept LT16ER inserts secured by a screw-clamp holding method, this toolholder provides repeatable positioning and secure insert retention during single-point threading passes. The 90/0 degree straight shank end-cut style positions the cutting edge for efficient external thread generation. The shank measures 0.75 inches square by 4.01 inches in length, with an overall length of 5 inches, making it compatible with standard OD turning tool stations. Coolant-through capability supports chip evacuation and extended insert life in ferrous and non-ferrous threading applications.

This toolholder is suited for production threading on manual and CNC turning machines in industrial machining environments. The laydown threading series is a common choice in job shops, production floors, and maintenance machining operations where consistent thread form and tool changeability are priorities. It is typically installed by machinists and tooling specialists setting up OD threading operations. Compatible insert style LT16ER covers a range of thread profiles and pitches depending on the insert selected.

Key Features

• Right-hand cut orientation for standard external threading setups
• Accepts LT16ER laydown threading inserts with screw-clamp retention
• 90/0 degree straight shank end-cut toolholder style for direct tool post mounting
• Coolant-through design aids chip evacuation and thermal management at the cutting zone
• Square 0.75 inch shank fits standard OD turning tool blocks and quick-change holders
• Overall length of 5 inches provides adequate reach for most turning center tool stations

Compatibility

Designed for use with LT16ER series laydown threading inserts. The 0.75 inch square shank is compatible with standard OD turning toolholders and quick-change tool post systems that accept that shank size. No additional specific model or system compatibility data was provided in the product input.

Installation Notes

Installation is performed by machinists during machine setup with the spindle fully stopped and the machine in a locked or e-stopped state. The toolholder should be seated squarely in the tool block and clamped to the torque specification required by the tool post manufacturer. Insert indexing or replacement requires a torx or hex key appropriate to the screw-clamp fastener; always verify insert seating before resuming cuts. Follow the machine manufacturer guidelines and applicable shop safety procedures when setting tool offsets and engaging threading cycles.