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Cle-Line 27/64 inch mechanics length drill bit black gold finish

Cle-Line

Cle-Line C23853 27/64 in 135 Degree Mechanics Length Drill Bit

SKU CH-YRB0-G878K

A 27/64 inch high-speed steel mechanics length drill bit with a 135 degree point and black-and-gold finish

  • 135-degree split point starts on contact for accurate holes
  • 27/64 inch fractional size matches common automotive fasteners
  • High-speed steel construction resists wear in steel and cast iron
  • Black and gold surface treatment reduces friction and heat buildup
  • Mechanics-length flute clears chips efficiently in deep holes

Product Identity

The Cle-Line C23853 is a 27/64 inch mechanics length drill bit designed for professional tradespeople and serious DIY users. It features a 135 degree point angle and high speed steel construction with a black and gold finish. The fractional inch measurement system suits standard workshop requirements.

Thermals Noise Power

The high speed steel material manages heat effectively during extended drilling operations in metal and wood. The 135 degree split point reduces thrust force and minimises walking at the start of the cut. This geometry promotes efficient chip evacuation and lowers power demand on the driving tool.

Upgrade Path

This bit replaces worn or standard jobber length drills when extra reach and rigidity are required for deeper holes. The mechanics length design bridges the gap between shorter stub bits and longer aircraft extension drills. The jump is worthwhile when hole depth exceeds standard flute capacity but full extension length is unnecessary.

How it compares

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

Price $5.99
Cheaper than about 93% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLE-LINE

Questions about this item

How do I install the Cle-Line C23853 27/64 in drill bit into my drill chuck, and what step do people often get wrong?

Open the chuck jaws wide enough for the 0.4219 inch shank, insert the bit fully, then tighten securely; the common mistake is not seating the bit completely before tightening, which causes wobble.

What maintenance or replacement will this 135 degree mechanics length drill bit need over time?

The high-speed steel cutting edges will dull with use; resharpen the 135 degree point angle on a bench grinder or replace the bit when drilling performance drops noticeably.

What limit appears first when using this fractional inch drill bit continuously in hard material?

Heat buildup at the cutting edges is the first limit; the black and gold finish helps, but sustained heavy drilling will overheat the high-speed steel, requiring cooling pauses.

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