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Chicago-Latrobe 45621 21/64 inch jobber drill bit black oxide finish split point

Chicago-Latrobe

Chicago-Latrobe 45621 135 Degree Heavy-Duty Jobber Length Drill Bit 21/64 in

SKU CH-PS9C-A6GGF

Heavy-duty jobber drill bit with 135-degree split point cuts 21/64 inch holes in metal

  • Product typeDrill Bits
  • Main materialHAWA
  • 135-degree split point starts on contact without wandering
  • High-speed steel construction resists wear in tough materials
  • Black oxide finish reduces friction and chip welding
  • Jobber length gives standard reach for general drilling
  • 21/64 inch diameter matches common fractional sizing

Application Focus

This Chicago-Latrobe 45621 drill bit handles 21/64 inch fractional holes with a 135 degree split point. The High Speed Steel body carries a Black Oxide finish for wear resistance in general-purpose metal drilling.

Who Benefits and Who Should Look Elsewhere

Machinists and maintenance technicians drilling steel, cast iron or similar alloys will value the self-centering split point. Buyers needing coolant-through capability or a larger diameter than 0.3281 inch decimal equivalent should select a different tool.

Decisive Specification

The 135 degree split point angle is the critical feature; it reduces thrust and starts accurately without a centre punch on hard materials, distinguishing this bit from standard point geometries.

How it compares

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

Price $3.99
Cheaper than about 96% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE
Product typeDrill Bits
Size & build
Main materialHAWA

Questions about this item

Will the 21/64 in shank fit my drill chuck?

The 21/64 in fractional inch shank fits standard three-jaw chucks that accept that size.

How do I start a hole with the 135 degree split point?

Align the bit, apply steady pressure, and let the 135 degree split point self-centre without a centre punch.

When should I replace this high speed steel bit?

Replace when the cutting edges dull, the black oxide wears off, or the bit no longer cuts cleanly at 135 degrees.

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