WNMG 060404 Chip Breaker BF Grade FM2543 / WNMG 331 BF #FMCarbide

WNMG 060404 Chip Breaker BF Grade FM2543 / WNMG 331 BF #FMCarbide

Turning Insert
$4.95 each
10 inserts per box
Grade
Chip Breaker
Item #
Quantity
- +

WNMG 060404 / WNMG 331, chip breaker BF, grade FM2543 — negative 80° trigon 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. FM2543 is a CVD grade — first-choice grade for general steel work — continuous through interrupted cuts across steel applications.

Specifications

  • Insert designation (ISO): WNMG 060404
  • Insert designation (inch): WNMG 331
  • Insert shape: 80° trigon (W)
  • 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: FM2543
  • Coating: CVD
  • ISO application range: P15–P30
  • Cutting speed, non-alloy steel: 590–1250 SFM (180–380 m/min)
  • Cutting speed, low-alloy steel: 380–1150 SFM (110–350 m/min)
  • Cutting speed, high-alloy steel: 200–980 SFM (60–300 m/min)

Tool holders that accept this insert

8 RMC toolholders in stock take this insert — 80° trigon, 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

5/8" shank MWLNR 10-3A
3/4" shank MWLNL 12-3B · MWLNR 12-3B · MWLNR 12-3C
1" shank MWLNL 16-3C · MWLNL 16-3D · MWLNR 16-3C · MWLNR 16-3D

Boring bars and interchangeable heads. 11 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

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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