Cleveland C70310 Screw Machine Drill Bit No. 6 Hss

Product Description

The CLEVELAND C70310 is a screw machine length drill bit designed for high-production drilling in tight spaces where a shorter tool is required. Built from high-speed steel with a bright, uncoated finish, this bit features a 135-degree split point that reduces walking and requires no center punch on most materials. The web-thinned, parallel web configuration reduces thrust and improves chip evacuation. At 2-3/8 inches overall length with a 1-1/4 inch flute length, this heavy-duty bit is sized for stub-length drilling applications common in machining, fabrication, and maintenance work. Two spiral flutes with a right-hand cut make it compatible with standard drill presses, CNC machines, and hand drills.

This bit is suited for drilling alloy steel and aluminum in production machining environments. Its screw machine length makes it ideal for drill press work where rigidity and reduced deflection matter, as well as for use in turret lathes, screw machines, and CNC machining centers. The straight cylindrical shank fits standard drill chucks without adapters. This is a single-piece unit intended for professional machinists, maintenance mechanics, and metalworking tradespeople requiring a reliable stub-length bit at wire gauge size No. 6.

Key Features

• 135-degree split point reduces thrust and eliminates walking on entry
• Web-thinned parallel web lowers cutting resistance and improves chip clearing
• High-speed steel construction rated for heavy-duty service in alloy steel and aluminum
• Screw machine length body provides added rigidity and reduced deflection versus jobber-length bits
• Straight cylindrical shank fits standard chucks without adapters
• Meets ASME B94.11M and NAS 907 Type C specifications

Compatibility

Designed as an OEM-style replacement or direct sourcing option for wire gauge No. 6 stub-length drill requirements. Compatible with standard drill chucks accepting a 0.2040-inch straight cylindrical shank. Primary workpiece materials listed by the manufacturer are alloy steel and aluminum.

Installation Notes

Installation is performed by qualified machinists or maintenance mechanics. Secure the shank fully in the chuck and verify runout before drilling. Follow standard lockout/tagout procedures on any powered equipment before changing bits. Do not exceed the rated feed and speed parameters for the workpiece material and bit diameter.