WCMT 06T308FN OS9101P Drilling Insert

The WCMT 06T308FN OS9101P is an indexable drilling insert made for U-drills where edge stability, chip control, and repeatable hole quality matter more than “max speed.” Built around a black PVD coating and a balanced carbide substrate, it’s intended for mixed-material production in ISO P/M/K ranges with predictable wear behavior and steady cutting action. Choose WCMT 06T308FN OS9101P when you want a practical, workshop-friendly grade window for drilling steels, stainless steels, and cast irons up to moderate hardness, without overcomplicating parameters. This grade family targets workpieces below HRC 45 and supports a sensible cutting-speed band for everyday drilling. If you need reliable performance across common shop materials on a properly clamped setup, WCMT 06T308FN OS9101P is a strong, consistent option.

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Code Breakdown

• WCMT: W = 80° trigon shape; C = clearance class; M = tolerance class; T = ISO clamping/hole style (indexable insert designation)

• 06T308: “06” = size series used in many drilling insert families; “T3” = thickness code used by drilling systems; “08” typically indicates 0.8 mm corner radius (R0.8)

• FN: manufacturer geometry / edge-prep code (chipformer specification)

• OS9101P grade: ISO P20–P30 / M20–M30 / K20–K30, PVD, Black, Drilling Machining, HRC <45, Vc 80–180 m/min

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Key Features

• Black PVD coating for balanced wear resistance in hole-making

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• Wide ISO coverage for steel, stainless, and cast iron production drilling

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• Trigon-style cutting edge supports a robust, stable drilling action

• Clear grade limits: HRC <45 and Vc 80–180 m/min for dependable setups

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Equivalent (Sandvik, Seco, Kennametal, Iscar)

Look for the same WCMT drilling insert family (size series “06”, R0.8) in each brand’s indexable drilling portfolio, then match the closest chipformer/edge prep to FN. Always confirm pocket position (center/periphery) and screw/seat compatibility with your drill body.

Recommended Cutting Data / Application

• Operation: indexable drilling (U-drills), ISO P20–30 / M20–30 / K20–30

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• Vc: 80–180 m/min (start lower for stainless/cast iron or less rigid setups; increase for stable steel drilling)

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• Use coolant where possible; reduce speed for interrupted entry or long overhangs; follow the drill maker’s feed guidance for diameter and insert position.

Links: Internal: https://dcut.ee | Outbound: https://en.wikipedia.org/wiki/Indexable_insert