Cle-line C74013 7mm Hss Jobber Drill Bit 135 Split Point

Product Description

The CLE-LINE C74013 is a high-speed steel jobber-length drill bit designed for productive drilling in steel, cast iron, and similar ferrous materials. It carries a 7.00 mm (0.2800 inch) diameter and a 135-degree split-point geometry that reduces walking and lowers thrust force at entry. The black oxide and gold coating improves lubricity and surface hardness for extended tool life in production and service environments. Overall length is 4.2900 inches with a flute length of 2.7200 inches. This bit is used by machinists, pipefitters, ironworkers, and general maintenance trades who drill by hand or on a drill press.

The C74013 is suited for drilling through mild steel, structural steel, and cast iron in both fabrication shop and field service settings. Its straight-cylindrical shank fits standard three-jaw chucks without requiring a collet adapter. The regular spiral flute promotes efficient chip evacuation in through-hole and blind-hole applications. With a 3xD flute-by-diameter ratio and a maximum recommended drilling depth of 0.6900 inches, it is well matched to general-purpose jobber work where a full-length bit is not required.

Key Features

• 135-degree split-point tip reduces walking and lowers entry thrust on hard materials
• High-speed steel construction rated for heavy-duty use on steel and cast iron
• Black oxide and gold dual coating improves lubricity and extends cutting life
• Two-flute regular spiral design promotes consistent chip clearance
• Straight-cylindrical shank with 3 flats fits standard drill chucks securely
• Meets ASME B94.11M and DIN 338 standards for dimensional accuracy and performance

Compatibility

Designed as an OEM-style jobber drill bit for use in standard straight-shank drill chucks; compatible with steel and cast iron workpieces in the 0.2500 to 0.3000 inch (7.00 to 8.00 mm) diameter range per Series 1878 specifications.

Installation Notes

Install in a properly sized three-jaw drill chuck and tighten securely with a chuck key before operation. Power down or de-energize the drill press or hand drill completely before changing bits. Wear appropriate eye protection and secure the workpiece with a vise or clamp - never hold freehand when drilling metal. Coolant-through is not supported on this bit; use a compatible cutting fluid applied externally when drilling harder steels to manage heat.