Chicago-latrobe 69030 Jobber Drill Bit No. 30 Hss 135

Product Description

The CHICAGO-LATROBE 69030 is a jobber-length drill bit in wire gauge size No. 30, measuring 0.1285 inches in decimal equivalent. Built from high speed steel with a bright uncoated finish, this bit is rated for heavy duty drilling applications. The 135-degree split point reduces walking on entry and requires less feed force compared to standard 118-degree geometry. A parabolic flute profile improves chip evacuation, which is especially important in deeper holes and in tougher materials. Overall length is 2.75 inches with a 1.625-inch flute length and a straight cylindrical shank. It is part of the Series 150DH lineup, designed for production and maintenance environments where consistent hole quality in steel alloy workpieces is required.

This bit is intended for drilling steel alloy and similar ferrous workpieces in light manufacturing, maintenance and repair, and trade fabrication settings. The right-hand cut, two-flute parabolic design makes it well suited for use in handheld drills, drill presses, and CNC drilling operations where a wire gauge No. 30 hole is specified. The web-thinned, tapered web configuration reduces thrust requirements and extends cutting life on harder stock. Machinists, pipefitters, and field technicians working with steel fabrication or equipment repair will find this bit appropriate for standard production drilling tasks.

Key Features

• Wire gauge size No. 30 at 0.1285 inches decimal equivalent
• 135-degree split point for reduced walking and lower entry force
• Parabolic flute geometry for improved chip evacuation in deeper holes
• Web-thinned tapered web reduces drilling thrust on steel alloy workpieces
• High speed steel construction rated for heavy duty service
• Straight cylindrical shank at 0.1285 inches diameter fits standard chucks

Compatibility

Designed as an OEM-style jobber length drill bit for use in standard drill chucks accepting a 0.1285-inch straight cylindrical shank, compatible with handheld drills, drill presses, and CNC drilling equipment set up for wire gauge No. 30 work in steel alloy and similar ferrous materials.

Installation Notes

Installation and use of this bit should be performed by machinists, pipefitters, or qualified trade personnel familiar with rotating cutting tools. Secure the workpiece fully before drilling and confirm chuck jaws are tightened to the appropriate setting for the shank diameter. Do not exceed the recommended speed and feed ranges for high speed steel bits in the target material. Inspect the cutting edges for wear or chipping before each use and replace the bit if the point geometry is compromised.