Cle-line C18102 No 49 Hss Jobber Drill Bit 135 Split Point

Product Description

The CLE-LINE C18102 is a No. 49 wire-gauge jobber-length drill bit designed for high-performance drilling in steel and cast iron. Built from high-speed steel (HSS) with a black and gold oxide coating, this bit delivers improved wear resistance and reduced heat buildup during extended drilling cycles. The 135-degree split-point tip reduces walking at entry, enabling accurate starts without a center punch on most flat surfaces. At 2 inches overall length with a 1-inch flute, this is a compact, precision bit suited for tight-clearance applications. Installed by machinists, tool-and-die technicians, and maintenance professionals working with light-gauge metal stock.

The C18102 is intended for drilling steel and cast iron workpieces in production and maintenance environments. Its 0.0730-inch diameter corresponds to No. 49 wire gauge, placing it in the small-diameter range where dimensional accuracy and bit rigidity matter most. The regular spiral flute geometry handles chip evacuation efficiently during right-hand drilling in shallow-to-moderate hole depths. This bit suits drill presses, CNC machinery, and hand drills where precise small-diameter holes are required.

Key Features

• No. 49 wire gauge diameter: 0.0730 inches for precise small-diameter drilling
• 135-degree split-point tip reduces drill walking and entry burr formation
• High-speed steel construction rated for heavy-duty service in steel and cast iron
• Black and gold oxide coating improves surface hardness and corrosion resistance
• Regular spiral flute with tapered web for consistent chip clearance
• Straight cylindrical shank with 0.0730-inch shank diameter fits standard chucks

Compatibility

Designed as a standard jobber-length replacement drill bit for use in drill presses, CNC equipment, and hand-held drills accepting a straight cylindrical shank. Suitable for primary workpiece materials including steel and cast iron per Series 1878 specifications.

Installation Notes

Secure the straight shank firmly in the chuck before operation and verify concentricity to minimize runout on small-diameter bits. Power down and de-energize the drill press or machine spindle completely before changing bits. Follow applicable ASME B94.11M and DIN 338 standards for drill selection and use. Avoid side-loading or flexing small-diameter bits, as they are prone to breakage under lateral stress.