Iscar 5901219 Threading Insert 60 Deg 3/8 Ic 48-8 Tpi

Product Description

The ISCAR 5901219 is a solid carbide laydown threading insert designed for external partial profile 60-degree thread cutting. It carries the IC250 manufacturer grade with a PVD-applied TiN coating and is engineered for right-hand threading operations. The insert features a 3/8 inch (0.3750 inch decimal) inscribed circle and a thickness of 0.143 inches, making it sized for standard 16ER-style toolholders. With a thread pitch range covering 48 to 8 TPI (0.50 mm to 3.00 mm), this insert handles a wide range of common thread forms on external workpieces. It is intended for use by machinists and toolroom technicians running CNC lathes or manual turning equipment.

This insert is suited for external threading operations on steel, stainless steel, and cast iron workpieces, corresponding to ISO material grades P, M, and K. The 60-degree partial profile geometry allows it to produce multiple thread pitches without requiring a dedicated insert for each pitch, reducing tooling inventory on general-purpose threading jobs. It fits into the ISCARTHREAD series toolholder system and is appropriate for both production and job-shop environments where a single insert must cover a broad TPI range.

Key Features

• Solid carbide construction with PVD TiN coating for wear resistance on ferrous materials
• IC250 grade targets cast iron, stainless steel, and carbon steel cutting applications
• External partial profile 60-degree thread form covers 48 to 8 TPI (0.50 mm to 3.00 mm pitch)
• Right-hand cutting geometry for standard lathe threading passes
• 3/8 inch inscribed circle fits 16ER-style toolholders in the ISCARTHREAD series
• Corner radius of 0.05 mm provides controlled thread root definition across the pitch range

Compatibility

Designed for use with 16ER-style laydown threading toolholders in the ISCARTHREAD series. Fits standard 16ER insert pockets accepting a 3/8 inch inscribed circle and 0.143 inch insert thickness.

Installation Notes

Insert seating and clamping should be performed with the machine fully powered down and the spindle locked. Use the appropriate torx or clamp screw driver specified for the toolholder to achieve proper clamping force — do not over-torque the clamp screw. Verify insert orientation matches the right-hand cutting direction before resuming operation. Worn or chipped inserts should be replaced promptly to avoid thread form deviation and workpiece scrap.