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Specification reference · product not verified

CNMG 160612

80° rhombic · 0° clearance · CNMG series

Inscribed circle · IC15.875 mm
Thickness · S6.35 mm
Corner radius · R1.2 mm
Dimension drawing ↓
Compare with CNMG 160608 →Check product information ↓

No exact manufacturer product is documented for this specification. Confirm the holder pocket and clamping before choosing a replacement.

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CNMG 160612Nominal geometry
80° rhombic 0° clearance · G configuration STRUCTURE ONLY
IC 15.875S 6.35R 1.2mm
Cylindrical hole · 2-face chipbreaker in base type. Outer envelope follows nominal IC, thickness and cutting-corner radius. Dashed circles are mounting symbols, not bore dimensions. Chipbreaker, edge preparation, tip construction and coating are not depicted. This is not a product photograph.

Nominal code dimensions

Dimension referenceCode-table source ↗

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01 / TOP VIEW IC 15.875 mm Dashed green circle = inscribed circle Dashed gray circles = mounting symbol only 02 / SIDE-NORMAL SECTION S 6.35 mm 0° flank from vertical 03 / CUTTING CORNER · ENLARGED R 1.2 mm · 80°
Separate scales for the three views. S is measured between the top and bottom reference planes. The side section shows the outer envelope only. Minor corners, bore/countersink dimensions, chipbreaker and edge preparation require the exact manufacturer drawing.
FieldmminCode-table position
Inscribed circle15.8750.62505 · ISCAR metric table ↗
Thickness6.350.25006 · ISCAR metric table ↗
Corner radius1.20.04727 · ISCAR metric table ↗

The inch column is mm ÷ 25.4, rounded to four decimal places. This is not an ANSI designation conversion. Product tolerances and clamping dimensions are not inferred.

CNMG 160612 versus CNMG 160608

radius: 0.8 → 1.2 mm. The nominal IC and thickness are unchanged.

Swipe to compare both references →

Nominal code-reference comparison
PropertyCNMG 160612CNMG 160608
FamilyCNMG CNMG
Outline80° rhombic 80° rhombic
Corner radius1.2 mm0.8 mm
Inscribed circle15.875 mm15.875 mm
Thickness6.35 mm6.35 mm
Corner angle80 °80 °
Clearance angle0 °0 °
Tolerance symbolM M
Configuration symbolG G
EvidenceCode table; product example not documentedCode table; product example not documented

Where this radius sits

The CNMG 1606 group in this directory has 5 entries, from 0.4 to 2.4 mm radius. This sits between the smallest and largest listed radii.

Confirm the part contour and tool compensation for 1.2 mm. A radius change does not establish surface finish, cutting data or holder compatibility.

Nearby CNMG references

  • CNMG 160608 → — radius: 1.2 → 0.8 mm. The nominal IC and thickness are unchanged.
  • CNMG 160616 → — radius: 1.2 → 1.6 mm. The nominal IC and thickness are unchanged.
  • CNMG 160604 → — radius: 1.2 → 0.4 mm. The nominal IC and thickness are unchanged.

Product evidence for CNMG 160612

No exact product row is attached to CNMG 160612. The CNMG code and 160612 digits describe nominal geometry; they do not prove that a product is manufactured or available.

Compare the documented evidence within CNMG →

Read shared CNMG configuration and selection limits →Calculate speed or feed after obtaining cutting data →

Source and limits

ISCAR · Metric insert identification ↗ · Single-sheet PDF, sections 1, 2, 4, 5, 6 and 7; visually checked 2026-10-20.

Shape, clearance, configuration and nominal code tables only. No grade, usable-edge count, catalogue availability or acceptance tolerances inferred. Values labeled “code table” are interpretations of a designation, not measurements of a delivered product. Product-row values are reported separately, including differences in printed precision.

See the page-by-page review →