Cle-line C74006 Jobber Drill Bit 3.50 Mm Hss

Product Description

The CLE-LINE C74006 is a high-speed steel jobber-length drill bit designed for production and maintenance drilling in steel and cast iron. It measures 3.50 mm (0.1400 inches) in diameter with an overall length of 2.7600 inches and a flute length of 1.5400 inches. The 135-degree split point reduces walking on entry and lowers thrust requirements, making it well-suited for hand-held and machine drilling in harder ferrous materials. A black oxide and gold coating improves surface hardness and provides mild lubricity during cutting. The regular spiral flute efficiently evacuates chips from the bore.

This bit is intended for drilling steel and cast iron in both shop and field applications. Its straight cylindrical shank fits standard drill chucks used in benchtop drill presses, hand drills, and CNC machines. The heavy-duty grade and high-performance classification make it appropriate for repetitive production runs as well as one-off maintenance work. Machinists, millwrights, pipefitters, and general maintenance technicians will find this bit appropriate for through-hole and blind-hole work in ferrous workpieces up to a maximum drilling depth of 0.3400 inches per pass.

Key Features

• 3.50 mm (0.1400 inches) diameter with diameter tolerance of +0.0000 to -0.0007 inches for precise fitment
• 135-degree split point reduces walking and lowers entry thrust on steel and cast iron
• Black oxide and gold dual coating for improved surface hardness and mild lubricity
• Regular spiral flute with tapered web configuration for efficient chip evacuation
• Right-hand cutting direction; straight cylindrical shank fits standard chucks
• Meets ASME B94.11M and DIN 338 standards; Series 1878 heavy-duty grade

Compatibility

Designed as an OEM-style replacement and standard jobber drill for use in any drill press, hand drill, or CNC spindle accepting a 0.1400-inch straight shank, intended for primary workpiece materials of steel and cast iron.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or trained maintenance technicians familiar with rotating cutting tools. Secure the shank fully in the chuck and verify runout before beginning a cut. Always power down and de-energize the machine before changing bits. Use appropriate cutting fluid or coolant on steel workpieces to extend tool life and maintain dimensional accuracy; note that this bit does not support coolant-through delivery.