TNMG 160404 Chip Breaker BF Grade FM324 / TNMG 331 BF Grade FM324 #FMCarbide

TNMG 160404 Chip Breaker BF Grade FM324 / TNMG 331 BF #FMCarbide

Turning Insert
$7.36 each
10 inserts per box
Grade
Chip Breaker
Item #
Quantity
- +

TNMG 160404 / TNMG 331, chip breaker BF, grade FM324 — negative triangular turning insert.

3/8" inscribed circle, 3/16" thick, 1/64" corner radius. The BF breaker is the finishing geometry: 0.002–0.010 ipr (0.05–0.25 mm/rev) at 0.02–0.06" (0.5–1.5 mm) depth of cut. FM324 is a PVD grade — universal multi-purpose grade for mid and low cutting speeds — low-carbon and alloyed steel, stainless, cast iron, Inconel and titanium alloys.

Specifications

  • Insert designation (ISO): TNMG 160404
  • Insert designation (inch): TNMG 331
  • Insert shape: triangular (T)
  • 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: BF — Steel — finishing
  • Feed rate range: 0.002–0.010 ipr (0.05–0.25 mm/rev)
  • Depth of cut range: 0.02–0.06" (0.5–1.5 mm)
  • Grade: FM324
  • Coating: PVD
  • ISO application range: P10–P30 · M05–M25 · S05–S25 · H20–H40
  • Cutting speed, non-alloy steel: 390–820 SFM (120–250 m/min)
  • Cutting speed, low-alloy steel: 230–750 SFM (70–230 m/min)
  • Cutting speed, high-alloy steel: 230–590 SFM (70–180 m/min)
  • Cutting speed, ferritic & martensitic stainless: 200–590 SFM (60–180 m/min)
  • Cutting speed, austenitic stainless: 200–490 SFM (60–150 m/min)
  • Cutting speed, gray cast iron: 200–520 SFM (60–160 m/min)
  • Cutting speed, nodular cast iron: 200–390 SFM (60–120 m/min)
  • Cutting speed, titanium & super-alloys: 110–200 SFM (35–60 m/min)
  • Cutting speed, hardened material: 130–260 SFM (40–80 m/min)

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

Availability and Shipping

FM Carbide maintains stock in the USA. If this item is not in stock, estimated time to ship is 14–21 calendar days.

Estimated time to ship is measured in calendar days, from order placement until your order is handed to the carrier. Carrier transit time is additional. Orders may ship sooner. We accept orders awaiting replenishment; please contact us before ordering if you need a specific shipping date.

See our Shipping Policy for details.

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