Kennametal 4176180 Threading Insert Size 88 Ndc KCU10

Product Description

The KENNAMETAL 4176180 is a solid carbide threading insert designed for cutting NPT thread forms on both internal and external workpieces. Part of the Top Notch series, this NDC-style insert carries a KCU10 manufacturer grade and features an AlTiN finish applied via PVD coating process. It is sized at 88 and profiles threads at 8 TPI with a 60-degree included angle, making it well-suited for producing tapered pipe threads in production and maintenance machining environments. The insert is right-hand cutting and intended for use in dedicated threading toolholders. Machinists and toolroom technicians working in metal fabrication, pipe fitting, and general manufacturing are the primary installers.

This insert is used in CNC lathes, manual lathes, and turret machines where NPT pipe thread forms are required. Its AlTiN PVD coating provides heat resistance and wear performance in ferrous and non-ferrous materials. The Top Notch series is a Kennametal-specific tooling platform, and this insert is matched to compatible Top Notch threading toolholders. Applications span both internal threading of pipe fittings and external threading of pipe nipples and similar components in job shop and production settings.

Key Features

• Solid carbide construction with KCU10 grade for consistent edge integrity under threading loads
• AlTiN finish applied by PVD process for improved heat and wear resistance
• NDC insert style in size 88 — matches Top Notch series toolholder seats
• Cuts NPT thread standard at 8 TPI with a 60-degree included angle
• Right-hand cutting geometry for standard lathe threading operations
• Handles both internal and external thread profiles in a single insert style

Compatibility

Designed for use with Top Notch series threading toolholders that accept NDC-style size 88 inserts. Consult the Kennametal Top Notch toolholder selection guide to confirm seat compatibility before ordering.

Installation Notes

Installation is performed by a qualified machinist. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or replacing the insert. Use the correct torque wrench and clamping screw specified for the Top Notch toolholder to avoid insert rocking or premature failure. Follow shop safety protocols for handling carbide inserts, as edges are sharp and carbide is brittle under impact.