Cleveland
Cleveland C91697 pneumatic accessory counterbore .250 dia 3.000 length
A high-speed steel counterbore with a built-in pilot, 0.250 inch diameter and 3.000 inch length
- High-speed steel construction resists wear during repetitive drilling
- 250 inch diameter matches #8 wire-gauge clearance holes
- 000 inch overall length provides extended reach in deep cavities
- Integrated pilot ensures accurate hole alignment without separate tooling
- Bright finish reduces friction and simplifies chip evacuation
Cleveland C91697 Counterbore — 0.250 dia
The Cleveland C91697 is a high-speed steel counterbore with a 0.250 inch diameter and a 3.000 inch overall length. It features a built-in pilot designed for #8 wire size holes. This accessory is intended for power and pneumatic tool users who need to create flat-bottomed recesses for screw heads in a single operation.
Heat, noise and power in normal use
High-speed steel construction resists heat buildup during intermittent drilling cycles typical of hand-held or press-fed pneumatic tools. The tool generates standard cutting noise levels for metalworking accessories of this class. Power draw is determined entirely by the driving tool and the workpiece material being machined.
What this replaces and when to upgrade
This counterbore replaces separate drilling and counterboring steps or worn high-speed steel tools that no longer cut cleanly. The jump is worth it when a built-in pilot matched to #8 wire size improves hole alignment and reduces setup time compared to pilotless alternatives. It is not suited for production volumes that demand carbide tool life or for diameters outside the 0.250 inch specification.
Highlights
- High-speed steel construction resists wear during repetitive drilling
- 250 inch diameter matches #8 wire-gauge clearance holes
- 000 inch overall length provides extended reach in deep cavities
- Integrated pilot ensures accurate hole alignment without separate tooling
- Bright finish reduces friction and simplifies chip evacuation
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
How do I install the Cleveland C91697 counterbore and what step is often missed?
Insert the .250 diameter shank fully into the chuck and tighten securely; the built-in pilot aligns automatically, but users often forget to verify the pilot seats flush before starting the cut.
What maintenance or replacement will the Cleveland C91697 counterbore need over time?
The high-speed steel cutting edges will dull with use; resharpen or replace the tool once the .250 diameter pilot or flutes show wear that affects hole quality.
What limit appears first on the Cleveland C91697 counterbore during sustained drilling?
Heat buildup in the high-speed steel body at the 3.000 length reduces cutting efficiency and accelerates edge wear before any structural issue arises.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
