Specification · manufacturer examples available

CCGT 120408

80° rhombic · 7° clearance · CCGT series

Inscribed circle · IC12.7 mm

Thickness · S4.76 mm

Corner radius · R0.8 mm

Compare with CCGT 120404 →View manufacturer examples ↓

Product grade and application depend on the full manufacturer designation. Confirm the holder pocket and clamping before choosing a replacement.

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CCGT 120408Nominal geometry

IC 12.7S 4.76R 0.8mm

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 ↗

Swipe to see the full dimension drawing →

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.

Field	mm	in	Code-table position
Inscribed circle	12.7	0.5000	5 · ISCAR metric table ↗
Thickness	4.76	0.1874	6 · ISCAR metric table ↗
Corner radius	0.8	0.0315	7 · 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.

CCGT 120408 versus CCGT 120404

radius: 0.4 → 0.8 mm. The nominal IC and thickness are unchanged.

Swipe to compare both references →

Nominal code-reference comparison
Property	CCGT 120408	CCGT 120404
Family	CCGT	CCGT
Outline	80° rhombic	80° rhombic
Corner radius	0.8 mm	0.4 mm
Inscribed circle	12.7 mm	12.7 mm
Thickness	4.76 mm	4.76 mm
Corner angle	80 °	80 °
Clearance angle	7 °	7 °
Tolerance symbol	G	G
Configuration symbol	T	T
Evidence	Code table + 2 catalogue examples	Code table + 1 catalogue examples

Where this radius sits

The CCGT 1204 group in this directory has 4 entries, from 0.4 to 1.6 mm radius. This sits between the smallest and largest listed radii.

Confirm the part contour and tool compensation for 0.8 mm. A radius change does not establish surface finish, cutting data or holder compatibility.

Nearby CCGT references

CCGT 120404 → — radius: 0.8 → 0.4 mm. The nominal IC and thickness are unchanged.
CCGT 120412 → — radius: 0.8 → 1.2 mm. The nominal IC and thickness are unchanged.
CCGT 120416 → — radius: 0.8 → 1.6 mm. The nominal IC and thickness are unchanged.

Product evidence for CCGT 120408

ISCAR / catalogue example

CCGT 120408-AS IC20

IC: 12.7 mm
Thickness: 4.76 mm
Radius: 0.8 mm
Grade: IC20

Read the exact catalogue row ↗

Aluminum Machining, PDF page 19 / printed page 17, exact designation row. Exact geometry row and IC20 availability mark in this catalogue. Cutting conditions require the applicable product data; no stock check.

ISCAR / catalogue example

CCGT 120408-AF IC20

IC: 12.7 mm
Thickness: 4.76 mm
Radius: 0.8 mm
Grade: IC20

Read the exact catalogue row ↗

Aluminum Machining, PDF page 20 / printed page 18, exact designation row. Exact geometry row and IC20 availability mark in this catalogue. Cutting conditions require the applicable product data; no stock check.

Read shared CCGT 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 →