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Silver cylindrical twist drill bit with split point tip and TiCN coating, jobber length, high speed steel

Chicago-Latrobe

Chicago-Latrobe 43783 M 4-3/8" HSS 135° Jobber Drill Bit

SKU CH-FTZX-QGS3S

Jobber-length drill bit with 135° split point in high-speed steel TiCN coating, size M (.2950 decimal)

  • Product typeDrill Bits
  • Main materialHAWA
  • Split-point tip starts on contact with 135° angle
  • HSS construction resists heat during extended drilling
  • TiCN coating reduces friction for smoother cuts
  • Letter-size M (.2950) fits precise pilot-hole requirements

Chicago-Latrobe 43783 HSS Jobber Drill Bit

This Chicago-Latrobe 43783 jobber drill bit is manufactured from high speed steel with a 135 degree split point for self-centering starts. It suits professional tradespeople and serious DIY users who need reliable hole-making in metal. The TiCN coating adds surface hardness and extends tool life during repetitive drilling tasks.

0.2950 inch capacity with 135 degree point

The .2950 decimal equivalent diameter handles letter size M holes in steel, cast iron and non-ferrous alloys. The split point geometry reduces walking on curved surfaces and lowers thrust requirements. It is not designed for coolant-through applications or for drilling hardened tool steels beyond the capability of standard high speed steel.

How it compares

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

Price $9.99
Cheaper than about 88% 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 135-degree split point on the 43783 bit engage my existing pilot holes without wandering?

The 135-degree split point is self-centering and reduces walking, so it engages existing pilot holes cleanly.

How can I confirm the 43783 drill bit is performing correctly after I start drilling?

A properly working bit produces a continuous chip, maintains the .2950 diameter, and cuts without excessive heat or vibration.

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