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Chicago-Latrobe 41788 drill bit, silver-gold finish, jobber length, split point

Chicago-Latrobe

Chicago-Latrobe 41788 135 Degree Heavy-Duty Jobber Length Drill pneumatic accessory

SKU CH-CYMK-CD0VE

A 135-degree split-point jobber drill bit in high-speed steel with TiN coating for accurate starts and longer life

  • Product typeDrill Bits
  • Main materialHAWA
  • 135-degree split point starts on contact for accurate holes
  • High-speed steel with TiN coating resists wear and heat
  • Jobber length fits standard chucks for versatile use
  • Size R with .3390 decimal equivalent matches precise specs
  • Chicago-Latrobe 41788 built for heavy-duty drilling tasks

Chicago-Latrobe 41788 Drill Bit

The Chicago-Latrobe 41788 is a jobber length drill bit designed for heavy-duty drilling tasks. It features a 135 degree split point that aids in accurate starting and reduces walking on hard surfaces. The bit is constructed from high speed steel with a TiN coating for extended tool life.

Suited for precision metal drilling

This bit suits machinists and maintenance technicians who require a durable tool for drilling steel and other ferrous materials. The split point geometry provides good centring without a centre punch. Buyers who need coolant-through capability or a different shank style should look at other options.

135 degree split point geometry

The defining specification is the 135 degree split point, which determines the bit's self-centring behaviour and suitability for harder materials. The decimal equivalent of the letter R size is .3390 inches. This point angle is the primary factor in deciding if this bit matches the application.

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

What size drill chuck do I need to hold the 0.3390 inch shank on this bit?

A standard 3/8 inch or 1/2 inch drill chuck will accept the 0.3390 inch diameter shank of this jobber length drill bit.

Will the 135 degree split point start cleanly on hardened steel without a centre punch?

Yes, the 135 degree split point design is made to self-centre and reduce walking on hard materials such as hardened steel.

How can I confirm the TiN coating is intact after the first few holes?

Inspect the cutting edges; the gold-coloured titanium nitride layer should remain visible on the flutes and margins with no dull grey wear spots.

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