Cle-line C74046 1/4 Inch Hss Jobber Drill Bit 135 Deg

Product Description

The CLE-LINE C74046 is a 1/4 inch (0.2500 inch) diameter high speed steel jobber drill bit designed for heavy-duty drilling in steel and cast iron. It features a 135-degree split point that reduces walking and allows faster penetration without a center punch. The black oxide and gold coating improves lubricity and extends tool life under high-cycle use. At 3.98 inches overall length with a 2.48 inch flute, this is a standard jobber-length bit suited for general metalworking operations performed by machinists, maintenance technicians, and trade professionals working in fabrication or field service environments.

This bit is built for primary use in ferrous workpiece materials including steel and cast iron. The regular spiral flute and tapered web configuration promote efficient chip evacuation during through-hole and blind-hole drilling. With a straight cylindrical shank at 0.2500 inch diameter and 1.50 inch shank length, it fits standard drill chucks on benchtop drill presses and handheld power drills alike. The Series 1878 designation places it in CLE-LINE's heavy-duty jobber line, conforming to ASME B94.11M and DIN 338 standards.

Key Features

• 135-degree split point reduces drill walking and improves bite on flat and curved metal surfaces
• High speed steel construction rated for heavy-duty performance in steel and cast iron
• Black oxide and gold dual coating for improved lubricity and wear resistance
• Regular spiral flute with tapered web for consistent chip clearance
• Straight cylindrical shank fits standard 3-jaw drill chucks without adapters
• Conforms to ASME B94.11M and DIN 338 dimensional standards

Compatibility

Designed as a standard jobber-length drill bit compatible with any drill press or handheld drill driver equipped with a chuck accepting a 0.2500 inch straight shank. Primary workpiece materials are steel and cast iron per Series 1878 application guidelines.

Installation Notes

Installation is performed by machinists or trade professionals using a standard keyed or keyless drill chuck. Secure the straight shank fully into the chuck before operation and verify chuck tightness before drilling. Use appropriate cutting fluid or coolant when drilling steel at sustained depths to manage heat buildup, as this bit is not coolant-through. Follow applicable shop safety standards and wear eye protection during all drilling operations.