Carmex 16IR16ACMEP30 Threading Insert 16 Tpi Acme Carbide

Product Description

The CARMEX 16IR16ACMEP30 is a solid carbide laydown threading insert designed for cutting internal ACME threads at 16 threads per inch (TPI). This insert features a right-hand cutting geometry and is supplied uncoated in the P30 manufacturer grade, equivalent to material grade C5. With a 3/8-inch inscribed circle and a thickness of 0.146 inches, it is sized for standard laydown-style toolholders used in CNC turning and thread-milling operations. Machinists and toolroom professionals install this insert on internal threading bars to produce ACME-profile threads commonly found in lead screws, linear actuators, and power transmission components.

This insert is suited for internal ACME threading operations on CNC lathes and turning centers. The solid carbide construction and P30 grade make it appropriate for threading steel and similar materials in production and job-shop environments. ACME thread forms are widely specified in industrial and mechanical applications where high load transfer and smooth linear motion are required. The laydown seating style ensures repeatable indexing and consistent thread profile from edge to edge.

Key Features

• Solid carbide construction in P30 grade for threading steel and similar materials
• Internal right-hand ACME thread profile at 16 TPI
• Uncoated finish for applications where coating is not required or preferred
• 3/8-inch (0.375 inches) inscribed circle for standard laydown toolholder compatibility
• 0.146-inch insert thickness for secure laydown seating
• Laydown insert style supports repeatable indexing in multi-edge use

Compatibility

Designed as a laydown-style threading insert for internal ACME thread applications; fits toolholders accepting the 16IR insert style with a 3/8-inch inscribed circle seating geometry.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the turret is in a safe indexed position before changing inserts. Use the correct torque wrench and clamping screw specified by the toolholder manufacturer to seat the insert properly - do not overtighten by hand or with an unapproved tool. Verify thread form and pitch accuracy with a go/no-go gauge or thread measuring system after the first pass before committing to a production run.