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Cle-Line C20497 extra-long HSS drill bit with black oxide finish

Cle-Line

Cle-Line C20497 118 Degree Extra Length Drill 1807 Steam Oxide HSS

SKU CH-0SGJ-Y3Q0K

Extra-long high-speed steel drill bit with 118-degree notched point for general-purpose machining

  • TypeMilling
  • Extra length reaches deeper holes up to 2 in
  • 118 degree point angle starts cleanly in steel
  • High speed steel body resists heat during cuts
  • Steam oxide finish reduces friction and wear
  • Helix angle range 21 to 34 degrees clears chips efficiently

Cle-Line Extra-Length Drill Bit 1/2 in

The Cle-Line C20497 is a fractional-inch drill bit with a 1/2-inch diameter and an extra-length design rated at 4xD. It features a 118-degree notched point made from high-speed steel with a black oxide finish. This accessory is intended for general-purpose machining in power and pneumatic tools.

Suited for deep-hole drilling in general materials

This bit suits machinists who need extended reach for holes up to 2 inches deep in standard workpieces. It is not for operators who require a different point angle or a specialised coating for hard steels or stainless alloys. Buyers needing a shorter flute length or a different shank style should look elsewhere.

118-degree notched point angle

The 118-degree notched point is the specification that determines whether this drill matches the application. It governs how the bit centres and cuts in general-purpose materials. Verify that this angle and the 4xD length align with the machine setup and the workpiece requirements before purchase.

Highlights

  • Extra length reaches deeper holes up to 2 in
  • 118 degree point angle starts cleanly in steel
  • High speed steel body resists heat during cuts
  • Steam oxide finish reduces friction and wear
  • Helix angle range 21 to 34 degrees clears chips efficiently

Specifications

BrandCLE-LINE
TypeMilling

Questions about this item

What does the 118-degree point angle mean when the drill is in a real machine?

The 118-degree point angle is a general-purpose geometry suited for drilling steel, cast iron and similar materials in a standard drill press or handheld drill.

How does the 21 to 34-degree helix range affect chip removal in practice?

The 21 to 34-degree helix provides a balance between chip evacuation and edge strength for general-purpose machining in steel and iron.

What does the 4xD designation tell me about the physical length needed to mount this bit?

The 4xD designation indicates a flute length roughly four times the 1/2-inch diameter, so the bit requires a chuck or holder that can accommodate that extra-long reach.

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