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Specification reference · product not verified

WCMT 040204

Trigon · 7° clearance · WCMT series

Inscribed circle · IC6.35 mm
Thickness · S2.38 mm
Corner radius · R0.4 mm
Dimension drawing ↓
Compare with WCMT 040202 →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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WCMT 040204Nominal geometry
Trigon 7° clearance · T configuration STRUCTURE ONLY
IC 6.35S 2.38R 0.4mm
Hole + one-face countersink · 1-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 6.35 mm Dashed green circle = inscribed circle Dashed gray circles = mounting symbol only 02 / SIDE-NORMAL SECTION S 2.38 mm 7° flank from vertical 03 / CUTTING CORNER · ENLARGED R 0.4 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 circle6.350.25005 · ISCAR metric table ↗
Thickness2.380.09376 · ISCAR metric table ↗
Corner radius0.40.01577 · 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.

WCMT 040204 versus WCMT 040202

radius: 0.2 → 0.4 mm. The nominal IC and thickness are unchanged.

Swipe to compare both references →

Nominal code-reference comparison
PropertyWCMT 040204WCMT 040202
FamilyWCMT WCMT
OutlineTrigon Trigon
Corner radius0.4 mm0.2 mm
Inscribed circle6.35 mm6.35 mm
Thickness2.38 mm2.38 mm
Corner angle80 °80 °
Clearance angle7 °7 °
Tolerance symbolM M
Configuration symbolT T
EvidenceCode table; product example not documentedCode table; product example not documented

Where this radius sits

The WCMT 0402 group in this directory has 3 entries, from 0.2 to 0.8 mm radius. This sits between the smallest and largest listed radii.

Confirm the part contour and tool compensation for 0.4 mm. A radius change does not establish surface finish, cutting data or holder compatibility.

Nearby WCMT references

  • WCMT 040202 → — radius: 0.4 → 0.2 mm. The nominal IC and thickness are unchanged.
  • WCMT 040208 → — radius: 0.4 → 0.8 mm. The nominal IC and thickness are unchanged.
  • WCMT 030204 → — IC: 6.35 → 5.56 mm. The nominal seat envelope changes; holder fit must be rechecked.

Product evidence for WCMT 040204

No exact product row is attached to WCMT 040204. The WCMT code and 040204 digits describe nominal geometry; they do not prove that a product is manufactured or available.

Compare the documented evidence within WCMT →

Read shared WCMT 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.

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