H40 MTFNL 4 Interchangeable Head for CNC Turning

H40 MTFNL 4 — interchangeable head, 2.500" head diameter, 3.030" minimum bore. Made in the USA by RMC Tooling.

H-MTFNR/L Heads.

Interchangeable boring head from RMC Tooling, machined in the United States. The head mounts on a matching RMC bar, so one bar covers a whole family of geometries and you only buy the cutting end.

The retention system is not interchangeable between families: heads with a W suffix use SM-series seats with LP-series pins, and heads without it use ICSN/IDSN seats with NL-series pins. The exact parts for this head are listed below.

Specifications

• Model: H40 MTFNL 4
• Minimum bore: 3.030"
• Head diameter (D): 2.500"
• Length (C): 1.625"
• Lead angle (K°): 6°
• Holding method: clamp and locking pin
• Insert shape: triangle
• Head style: 0° end cutting edge angle
• Holder rake: negative
• Hand: left hand
• Brand: RMC Tooling — made in the USA

Exact replacement parts for this tool

These are the service parts RMC lists for this exact model — not a generic cross-reference. Every one is stocked.

See all RMC spare parts & hardware →

Not sure how to read an insert code? Turning insert designation explained.

Dimensions as published in the RMC 2020 catalog, page 96.