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Cleveland C94575 cobalt countersink, 90 degree bright finish

Cleveland

Cleveland C94575 Countersink 3/8 in 90° 1-3/4 in

SKU CH-NHXW-9BFXK

A 90-degree cobalt countersink with a 3/8-inch diameter and bright finish

  • Product typeCountersinks & Sets
  • 90° angle creates clean countersunk holes for flush fasteners
  • 3/8 in diameter matches common pilot-hole sizes in metalwork
  • Cobalt construction resists heat and wear during high-speed drilling
  • Bright uncoated finish reduces friction and prevents galling in soft metals
  • Cleveland brand trusted for durable power-tool accessories in professional shops

Cleveland C94575 Countersink

The Cleveland C94575 is a 90 degree cobalt countersink built for metalworking shops and maintenance teams that need clean, burr-free holes in steel and alloy. Its bright uncoated finish keeps the cutting edges sharp for repeatable results on drill presses and hand-held tools.

Replaces worn high-speed steel bits

When existing countersinks leave chatter marks or dull quickly in abrasive materials, the cobalt substrate extends edge life and reduces the frequency of tool changes. The upgrade pays off on jobs that run multiple holes per shift or work with harder grades of steel.

Handles 3/8 inch diameter chamfers

The cutter produces a consistent 90 degree profile on holes up to its nominal size, giving enough headroom for standard fastener heads in sheet metal and plate. Larger diameters or deep countersinking beyond the flute length will require a different tool.

How it compares

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

Price $24.99
Cheaper than about 55% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeCountersinks & Sets

Questions about this item

What size drill chuck or holder does the 3/8 in shank on this Cleveland countersink require?

The countersink has a 3/8 in shank, so it fits any standard 3/8 in or larger drill chuck, quick-change adapter or impact driver collet that accepts a 3/8 in round shank.

How do I install this cobalt countersink so it cuts cleanly without chattering?

Clamp the workpiece, select a low speed appropriate for the material, apply steady axial pressure and keep the tool perpendicular; the most common error is running the drill too fast, which causes the 90° flutes to chatter.

When will the cutting edges on this uncoated cobalt countersink need sharpening or replacement?

Cobalt steel holds an edge longer than high-speed steel, but the bright uncoated flutes will eventually dull; resharpen or replace the tool when the 90° cutting lips no longer produce a clean chamfer or when feed force increases noticeably.

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