Chicago-latrobe 70134 Jobber Drill Bit Wire 34 Hss Tin

Product Description

The CHICAGO-LATROBE 70134 is a jobber length drill bit from the Series 150T line, designed for general-purpose drilling in ferrous and non-ferrous metals. It is manufactured from high speed steel with a titanium nitride (TiN) coating that increases surface hardness and reduces friction during cutting. The bit carries a wire gauge size of 34, equal to 0.1110 inches in decimal, and features a standard 118-degree split-point geometry with web thinning for improved penetration and reduced walking on entry. Overall length is 2-5/8 inches with a 1-1/2 inch flute length. This bit is used by machinists, pipefitters, electricians, and general trade technicians who require consistent tolerance on small-diameter holes.

The 70134 is suited for drilling into cast iron, steel, and similar ferrous workpiece materials in both shop and field environments. The straight-cylindrical shank seats securely in standard keyed or keyless drill chucks without slipping under load. The regular spiral flute design provides reliable chip evacuation during through-hole and blind-hole operations. This bit ships individually but is sold in multiples of 12, making it practical for stocking in service vehicles or shop drill indexes that see frequent small-diameter work.

Key Features

• Wire size 34 (0.1110 inches) with a diameter tolerance of -0.0005 to 0.0000 inches for tight, consistent hole sizing
• Titanium nitride (TiN) coating extends tool life and lowers cutting friction compared to uncoated HSS
• 118-degree standard point angle with web thinning reduces thrust force and prevents bit walk on entry
• Tapered web configuration with regular spiral flutes for effective chip clearance in cast iron and steel
• Straight-cylindrical shank (0.1110 inches diameter) fits standard 3-jaw drill chucks without adapters
• Conforms to DIN 338 standard for jobber length drill bit geometry

Compatibility

Designed as a general-purpose jobber length drill bit compatible with any standard 3-jaw keyed or keyless drill chuck that accepts a straight-cylindrical shank. Primary workpiece materials listed by the manufacturer are cast iron and steel.

Installation Notes

This bit is installed and removed by a licensed or qualified machinist or tradesperson using a standard drill chuck key or keyless chuck mechanism. Before changing bits in any power drill or drill press, disconnect power or remove the battery to prevent accidental startup. Secure the workpiece with appropriate clamping before drilling to prevent rotation and injury. Apply cutting fluid or a suitable lubricant when drilling ferrous metals to prolong bit life and improve hole quality.