Kennametal 3744981 DCMT3251MP KCS10 Carbide Turning Insert

Product Description

The KENNAMETAL 3744981 is a solid carbide turning insert carrying the industry standard designation DCMT3251MP in the KCS10 grade. It features a diamond (rhombic) 55-degree insert shape with a positive rake angle of 12 degrees and a 7-degree relief angle. The AlTiN PVD coating delivers high wear resistance across a range of workpiece materials, with particular strength in stainless steel, superalloys, and titanium applications. The MP chip breaker geometry is rated for roughing and medium machining operations. With two cutting edges and a screw-on holding method, this insert is a standard choice for CNC turning centers operated by machinists and tooling technicians.

This insert is suited for turning, facing, boring, back turning, and back boring operations on CNC lathes and turning centers. It is designed for use on steel (P), stainless steel (M), cast iron (K), aluminum and non-ferrous (N), superalloys and titanium (S), and hard materials (H) workpieces. The KCS10 grade balances high wear resistance with moderate toughness, making it a practical selection for interrupted or continuous cuts in production environments. Conforms to ANSI insert code DCMT3251 and ISO insert code DCMT11T304.

Key Features

• AlTiN PVD coating for high wear resistance on stainless steel, superalloys, and titanium
• Diamond (rhombic) 55-degree insert shape with positive rake and positive side clearance
• MP chip breaker geometry supports roughing and medium machining operations
• Two cutting edges per insert for extended tooling value
• Screw-on holding method for secure, repeatable seating in compatible toolholders
• Multi-use application: turning, facing, boring, back turning, and back boring

Compatibility

Designed as a screw-on style replacement insert conforming to ANSI insert code DCMT3251 and ISO insert code DCMT11T304, compatible with toolholders accepting DCMT-style inserts with a screw-on clamping method. Material grade C3 and C4.

Installation Notes

Installation is performed by qualified machinists or tooling technicians on CNC or manual turning equipment. Power down and lock out the machine before seating or replacing inserts. Use the correct torque wrench and manufacturer-specified insert screw to avoid cracking the carbide substrate — do not overtighten by hand or with non-calibrated tools. Inspect the toolholder pocket for wear or debris before indexing to a fresh cutting edge.