WCMT 050208FN OS5835 Carbide Drill Insert

The WCMT 050208FN OS5835 is a robust carbide drill insert designed for indexable drilling systems. With its W-shaped trigon geometry and positive cutting edges, it provides efficient chip evacuation, low cutting forces, and stable hole accuracy. The 0.8 mm corner radius reinforces the cutting edge, making it suitable for semi-finishing and general-purpose drilling under medium to heavy-duty conditions.

Manufactured in OS5835 grade, this insert is built on a fine-grained carbide substrate with a copper-colored PVD coating. The grade offers strong versatility and durability, making it ideal for steels, stainless steels, and cast irons. The FN chipbreaker is optimized for drilling, ensuring smooth chip flow, reduced tool wear, and consistent surface quality, even in continuous production cycles.

The WCMT 050208FN OS5835 fits a wide range of indexable drill bodies designed for WCMT inserts. It is widely used in automotive, aerospace, and general engineering industries where reliability, repeatability, and productivity in drilling operations are essential.

Code Breakdown:

• W – Insert shape: trigon (80° with curved edges)

• C – Relief angle: 7° positive

• M – Tolerance class (medium)

• T – Insert with hole and chipbreaker

• 05 – Insert size: 5 mm

• 02 – Insert thickness: 2.38 mm

• 08 – Corner radius: 0.8 mm

• FN – Chipbreaker for drilling

• OS5835 – Grade for steels, stainless steels, and cast iron

Key Features:

• WCMT-style trigon carbide drill insert

• Size: 5 mm, thickness 2.38 mm, radius 0.8 mm

• OS5835 grade – versatile copper PVD coating

• FN chipbreaker for stable drilling and chip evacuation

• Positive geometry for low cutting forces and high accuracy

• Compatible with indexable drill bodies for WCMT inserts

• Best for steels, stainless steels, and cast irons

Grade Information (OS5835):

• Coating: PVD, copper color

• Application: drilling and milling of steels (45#, Q235), stainless steels (304, 316), cast iron

• Best for: stainless steel and general-purpose drilling

• Material hardness: HRC <30

• Cutting speed: 120–220 m/min