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Cylindrical cobalt end mill with four spiral flutes and Weldon flat shank

Cleveland

Cleveland C32675 4-Flute Cobalt 8% Square End Mill .3125 in

SKU CH-YDMT-NRQ08

A 4-flute cobalt 8% square end mill with a 0.3125 in cutting diameter and 1.375 in length of cut for general-purpose milling

  • Product typeMilling
  • 4-flute design enables efficient multi-directional cutting
  • 8% cobalt construction provides high heat resistance
  • TiCN coating extends tool life in abrasive materials
  • Weldon flat shank ensures secure toolholder grip
  • Center-cut geometry allows direct plunge milling

0.3125 in Cobalt End Mill

The Cleveland C32675 is a four-flute cobalt 8% square end mill built for general-purpose milling. Its TiCN coating adds wear resistance for longer tool life in steel and alloy work. The centre-cut design allows plunging cuts as well as side milling. It suits machinists and maintenance shops needing a reliable single-end cutter.

Upgrade from uncoated HSS cutters

Switching to this cobalt tool pays off when cutting harder materials or running higher speeds that burn up standard high-speed steel. The 8% cobalt content holds an edge better under heat, while the TiCN layer reduces friction and built-up edge. The jump is worth it for batch work where tool changes cost downtime.

Weldon flat shank installs in standard holders

The 3/8 in shank with a Weldon flat locks securely in side-lock or set-screw holders without extra adapters. Runout stays low when the flat seats fully against the locking screw. The main issue appears if the holder bore is worn or the flat is not aligned, which can cause vibration and premature flank wear.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $25.99
Typical for this category: the median of 5,493 items is $27.99.

Specifications

Product
Brand nameCLEVELAND
Product typeMilling

Questions about this item

What shank diameter does the .3125 in cutter need for a Weldon flat holder?

The shank is 3/8 in with a Weldon flat, so it fits a standard 3/8 in end-mill holder with a set-screw flat.

How do I install this cobalt end mill without it slipping?

Align the Weldon flat with the holder set screw, tighten the screw firmly on the flat, then verify zero run-out before cutting.

When should I replace or re-sharpen the 4-flute cobalt tool?

Replace or re-sharpen when flank wear exceeds 0.3 mm, edge chipping appears, or surface finish degrades on typical steel alloys.

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