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Chicago-Latrobe

Chicago-Latrobe 41794 135° Split-Point Drill Bit .3970

SKU CH-WP6P-E60G8

135° split-point drill bit in high-speed steel with TiN coating, sized .3970 letter X for accurate jobber-length drilling

  • TypeDrill Bits
  • MaterialHAWA
  • 135° split point starts drilling instantly on hard materials
  • High-speed steel with TiN coating resists wear and heat
  • .3970 inch diameter matches precise letter-size requirements
  • Jobber length gives standard reach for general workshop use
  • Heavy-duty construction handles repeated drilling in tough steel

Chicago-Latrobe 41794 Split-Point Drill Bit

The Chicago-Latrobe 41794 is a jobber length drill bit designed for general-purpose drilling in metal, wood and plastic. Its 135-degree split-point tip reduces walking and allows faster penetration without a centre punch. Machinists, maintenance technicians and DIY users who need a reliable bit for everyday tasks will find it suitable.

High-Speed Steel Construction with TiN Coating

The bit is manufactured from high-speed steel and features a titanium nitride coating that increases surface hardness and reduces friction. This combination resists wear during repetitive drilling and extends tool life compared with uncoated alternatives. The straight shank fits standard three-jaw chucks on both corded and cordless drill drivers for quick changes.

135-Degree Geometry for Cooler, Quieter Cuts

The 135-degree point angle distributes cutting forces evenly, lowering heat build-up and vibration during normal use. Less heat means the bit stays sharp longer and the workpiece suffers less thermal distortion. Reduced vibration also cuts operating noise, making extended drilling sessions more comfortable for the operator.

Highlights

  • 135° split point starts drilling instantly on hard materials
  • High-speed steel with TiN coating resists wear and heat
  • .3970 inch diameter matches precise letter-size requirements
  • Jobber length gives standard reach for general workshop use
  • Heavy-duty construction handles repeated drilling in tough steel

Specifications

BrandCHICAGO-LATROBE
TypeDrill Bits
MaterialHAWA

Questions about this item

What does the 135° split-point design do for drilling accuracy?

The 135-degree split point reduces walking and starts holes on contact without a centre punch, improving precision on metal surfaces.

What shank size fits this jobber-length drill bit?

The bit has a straight shank sized to its .3970 decimal diameter, fitting standard three-jaw chucks and drill presses without a reduced shank.

How should I install this high-speed steel TiN bit to avoid premature wear?

Secure the workpiece, use cutting fluid, run the correct RPM for the .3970 diameter, and apply steady pressure — do not force the feed or let the bit dwell in the hole.

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