It is an ISO 1832 code. W = Shape: 80° trigon; N = Clearance angle: 0° (negative insert); M = Tolerance class: Class M; G = Hole and chipbreaker: Cylindrical hole, chipbreaker on both faces.

Which WNMG sizes do you make?

19 sizes, from WNMG060402 to WNMG100612, with inscribed circles from 9.525 to 15.875 mm. Grade, coating and chipbreaker are confirmed with each quotation.

How do I read WNMG060408?

WNMG = format; 06 = Cutting edge length code (about 6 mm); 04 = Thickness (4.76 mm); 08 = Corner (0.8 mm nominal).

ISO insert format

WNMG inserts

80° trigon turning insert. We make 19 WNMG sizes, from WNMG060402 to WNMG100612. Grade, coating and chipbreaker are matched to your material and operation.

Ask for a quotation See all sizes

Illustration drawn from the designation, not to scale. Colour depends on the coating.

Reading the code

What WNMG means

The first four letters of an ISO 1832 designation give the shape, the clearance angle, the tolerance class, and the hole and chipbreaker.

Code	Feature	Meaning
W	Shape	80° trigon
N	Clearance angle	0° (negative insert)
M	Tolerance class	Class M
G	Hole and chipbreaker	Cylindrical hole, chipbreaker on both faces

Where WNMG inserts are used

The trigon has three 80° corners per face: a corner as strong as a C insert's, more corners per insert, but a shorter cutting edge for the same inscribed circle.

WNMG is a negative 80° trigon turning insert. It has a cylindrical hole. It has a chipbreaker on both faces. It can be turned over, so both faces are used: twice the corners of a one-sided insert. Negative inserts have a strong edge and are used from finishing to roughing on rigid machines.

Choose the size for your depth of cut, the corner radius for the feed and finish, and a holder made for WNMG inserts of that size.

WNMG sizes we make

Designation	Inscribed circle	Thickness	Corner
WNMG060402	9.525 mm	4.76 mm	0.2 mm
WNMG060404	9.525 mm	4.76 mm	0.4 mm
WNMG060406	9.525 mm	4.76 mm	0.6 mm
WNMG060408	9.525 mm	4.76 mm	0.8 mm
WNMG060412	9.525 mm	4.76 mm	1.2 mm
WNMG06T302	9.525 mm	3.97 mm	0.2 mm
WNMG06T304	9.525 mm	3.97 mm	0.4 mm
WNMG06T308	9.525 mm	3.97 mm	0.8 mm
WNMG06T312	9.525 mm	3.97 mm	1.2 mm
WNMG080402	12.7 mm	4.76 mm	0.2 mm
WNMG080404	12.7 mm	4.76 mm	0.4 mm
WNMG080404L	12.7 mm	4.76 mm	0.4 mm
WNMG080404R	12.7 mm	4.76 mm	0.4 mm
WNMG080408	12.7 mm	4.76 mm	0.8 mm
WNMG080408L	12.7 mm	4.76 mm	0.8 mm
WNMG080408R	12.7 mm	4.76 mm	0.8 mm
WNMG080412	12.7 mm	4.76 mm	1.2 mm
WNMG100608	15.875 mm	6.35 mm	0.8 mm
WNMG100612	15.875 mm	6.35 mm	1.2 mm

Dimensions shown are nominal values; a dash means the dimension has not been verified for this insert. Confirm the dimensions against the product drawing. The detailed chipbreaker geometry, grade and coating are not specified by the four-letter format; we confirm them with the quotation. Confirm the fit with the pocket and clamping system of your holder or cutter.

Questions

What does WNMG mean?: It is an ISO 1832 code. W = Shape: 80° trigon; N = Clearance angle: 0° (negative insert); M = Tolerance class: Class M; G = Hole and chipbreaker: Cylindrical hole, chipbreaker on both faces.
Which WNMG sizes do you make?: 19 sizes, from WNMG060402 to WNMG100612, with inscribed circles from 9.525 to 15.875 mm. Grade, coating and chipbreaker are confirmed with each quotation.
How do I read WNMG060408?: WNMG = format; 06 = Cutting edge length code (about 6 mm); 04 = Thickness (4.76 mm); 08 = Corner (0.8 mm nominal).

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WNMG inserts

Where WNMG inserts are used

WNMG sizes we make

Questions

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