Chicago-latrobe 52495 Reduced Shank Drill Bit 1-31/64 in

Product Description

The CHICAGO-LATROBE 52495 is a reduced shank twist drill bit designed for portable drilling applications across metal, wood, and cast iron workpieces. Built from high speed steel with a coated finish, this bit features a 1-31/64 inch cutting diameter paired with a 1/2 inch Weldon shank, allowing it to fit standard 1/2 inch drill chucks while reaching larger bore diameters. The 118-degree standard point angle provides a versatile entry geometry suitable for general-purpose use. A right-hand spiral flute configuration evacuates chips efficiently during drilling. The Weldon shank includes three flats to prevent slipping in compatible chuck holders.

This bit is suited for field and shop drilling in construction, mechanical, and industrial trades. The reduced shank design allows a larger cutting diameter to be driven by a 1/2 inch capacity drill or drill press without requiring a larger chuck. Typical applications include drilling through alloy steel, carbon steel, cast iron, and wood. The 6 inch overall length and 3-1/8 inch flute length give the bit enough reach for deeper bores in structural or fabrication work. No internal coolant is required.

Key Features

• 1-31/64 inch cutting diameter (1.4844 inch decimal) with tight tolerance of +0.0000 to -0.0015 inches
• 1/2 inch Weldon shank with three flats for slip-resistant chuck engagement
• 118-degree standard point angle for general-purpose drilling
• High speed steel construction with coated finish for extended service life
• Right-hand cut, regular spiral, two-flute design for efficient chip evacuation
• Series 190F reduced shank configuration allows larger diameter boring with standard 1/2 inch tooling

Compatibility

Designed for use with 1/2 inch Weldon-style drill chucks and compatible drill presses or portable drills. Suitable for drilling alloy steel, carbon steel, cast iron, and wood workpieces in general-purpose applications.

Installation Notes

Secure the Weldon shank fully into a compatible 1/2 inch chuck, ensuring all three shank flats engage the chuck set screws before operation. Verify the drill or drill press is powered off and locked out before installing or removing the bit. Use appropriate feed rates and cutting speeds for the workpiece material to avoid overheating the cutting edge. No coolant supply is required, though external cutting fluid may be applied manually for extended use in steel.