Cle-line C23153 1/2 Inch Jobber Drill Bit Hss 135 Degree

Product Description

The CLE-LINE C23153 is a jobber-length twist drill bit designed for high-volume metal drilling in trade and industrial applications. Ground from high speed steel (HSS) with an oxide coating, it handles demanding materials including cast iron and steel without rapid edge breakdown. The 135-degree split point starts on contact without a center punch and reduces walking on hard surfaces. At 6 inches overall length with a 4.5-inch spiral flute, the C23153 follows standard jobber geometry, making it a direct fit for most drill chucks and magnetic drill presses used by ironworkers, pipefitters, and maintenance mechanics.

This bit is suited for ferrous metal drilling in fabrication shops, mechanical rooms, and field service environments. The straight cylindrical shank measures 0.5000 inches in diameter, fitting standard 1/2-inch keyed and keyless chucks. The web-thinned, tapered web design reduces thrust force at the point, which is especially useful when drilling thicker steel plate or cast iron components. It meets ASME B94.11M and DIN 338 standards, confirming consistent dimensional tolerances across the lot.

Key Features

• 135-degree split point starts on contact, no center punch required
• High speed steel construction with oxide coating for heat and wear resistance
• Web-thinned tapered web reduces cutting thrust in ferrous metals
• 4.5-inch spiral flute length promotes chip evacuation in deep holes
• Straight cylindrical shank fits standard 1/2-inch drill chucks
• Meets ASME B94.11M and DIN 338 dimensional standards

Compatibility

Designed for drilling cast iron and steel. Fits any standard keyed or keyless chuck accepting a 1/2-inch straight cylindrical shank. Part of the CLE-LINE Series 1801 heavy duty jobber drill line.

Installation Notes

This bit is installed and operated by machinists, ironworkers, pipefitters, and maintenance mechanics using handheld or bench-mounted drills. Secure the shank fully in the chuck jaws before operation and confirm the chuck is tightened at all three positions on keyed chucks. Apply consistent feed pressure and use an appropriate cutting fluid when drilling steel to extend edge life. Wear appropriate PPE including eye protection and secure the workpiece before drilling.