VNMG 160404 Chip Breaker BMF Grade FM2553 / VNMG 331 BMF #FMCarbide

VNMG 160404 Chip Breaker BMF Grade FM2553 / VNMG 331 BMF #FMCarbide

Turning Insert
$7.44 each
10 inserts per box
Grade
Chip Breaker
Item #
Quantity
- +

VNMG 160404 / VNMG 331, chip breaker BMF, grade FM2553 — negative 35° rhombic turning insert.

3/8" inscribed circle, 3/16" thick, 1/64" corner radius. The BMF breaker is the finishing geometry: 0.003–0.012 ipr (0.07–0.3 mm/rev) at 0.01–0.06" (0.2–1.5 mm) depth of cut. FM2553 is a CVD (Al₂O₃) grade — tough substrate for heavy interrupted cuts in steel and stainless, heavy roughing in mild steel, and first choice for superalloys.

Specifications

  • Insert designation (ISO): VNMG 160404
  • Insert designation (inch): VNMG 331
  • Insert shape: 35° rhombic (V)
  • Clearance angle: 0° — negative (N)
  • Tolerance class: M
  • Insert type: G — with hole, chipbreaker both sides
  • Inscribed circle (I.C.): 3/8" (9.52 mm)
  • Thickness: 3/16" (4.76 mm)
  • Corner radius: 1/64" (0.4 mm)
  • Chip breaker: BMF — Stainless steel — finishing
  • Feed rate range: 0.003–0.012 ipr (0.07–0.3 mm/rev)
  • Depth of cut range: 0.01–0.06" (0.2–1.5 mm)
  • Grade: FM2553
  • Coating: CVD (Al₂O₃)
  • ISO application range: P20–P35 · M10–M30
  • Cutting speed, non-alloy steel: 490–1150 SFM (150–350 m/min)
  • Cutting speed, low-alloy steel: 300–980 SFM (90–300 m/min)
  • Cutting speed, high-alloy steel: 230–820 SFM (70–250 m/min)
  • Cutting speed, ferritic & martensitic stainless: 390–750 SFM (120–230 m/min)
  • Cutting speed, austenitic stainless: 260–660 SFM (80–200 m/min)
  • Cutting speed, titanium & super-alloys: 110–260 SFM (35–80 m/min)

Tool holders that accept this insert

44 RMC toolholders in stock take this insert — 35° rhombic, 0° — negative clearance, 3/8" inscribed circle, 3/16" thick. Pick by the shank your turret takes.

RMC square-shank toolholders — made in the USA

3/4" shank MVJNL 12-3B · MVJNR 12-3B · MVJNR 12-3C · MVLNL 12-3B · MVLNL 12-3C · MVLNR 12-3B · MVTNL 12-3B · MVTNR 12-3B · MVVNN 12-3B · MVVNN 12-3C
1" shank MVJNL 16-3C · MVJNL 16-3D · MVJNR 16-3C · MVJNR 16-3D · MVLNL 16-3C · MVLNL 16-3D · MVLNR 16-3D · MVTNL 16-3D · MVTNR 16-3C · MVTNR 16-3D · MVVNN 16-3D
1-1/4" shank MVJNL 20-3C · MVJNL 20-3D · MVJNL 20-3E · MVJNR 20-3D · MVJNR 20-3E · MVLNL 20-3D · MVLNR 20-3D · MVTNL 20-3D · MVTNR 20-3D · MVTNR 20-3E · MVVNN 20-3D · MVVNN 20-3E
1-1/2" shank MVJNL 24-3D · MVJNL 24-3E · MVJNR 24-3D · MVJNR 24-3E · MVLNR 24-3E · MVTNL 24-3E · MVTNR 24-3E · MVVNN 24-3D · MVVNN 24-3E
1" x 1-1/4" shank MVLNL 85-3D · MVLNR 85-3D

Boring bars and interchangeable heads. 33 more RMC tools take the same insert for internal turning. See RMC boring bars →

TURNING KNOW-HOW

Get more from your turning inserts.

Practical guides to choosing, understanding and using your inserts.

01 / SELECTION

Grades & chip breakers

Explore the grade and chip-breaker selection chart for your turning operation.

Explore the chart 02 / INSERT CODES

Know your insert

Understand turning-insert designations and what the letters and numbers mean.

Read the guide 03 / CUTTING PARAMETERS

Turning calculations

Learn how to use a turning formula calculator to work through the numbers.

Explore the formulas

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