Cleveland C70352 Screw Machine Drill Bit 48 Hss

Product Description

The CLEVELAND C70352 is a screw machine length drill bit designed for precision drilling in tight-clearance and high-production machining environments. Built from high-speed steel with a bright, uncoated finish, it carries a wire gauge size of 48, which corresponds to a decimal diameter of 0.0760 inches. The 135-degree split point reduces walking and requires less feed pressure at entry, making it well-suited for accurate starts on metal workpieces. With an overall length of 1-11/16 inches and a straight-cylindrical shank, this is a compact, stubby-format bit intended for screw machine work and similar short-reach drilling operations. It is installed by machinists and tool-and-die professionals.

The C70352 is rated for use on alloy steel and aluminum workpieces. Its screw machine length format — shorter than jobber length — provides greater rigidity and reduced deflection in turret lathes, screw machines, and machining centers where spindle clearance is limited. The two-flute spiral design with web-thinned, parallel web construction promotes chip evacuation and reduces torque demand during the cut. This bit conforms to ASME B94.11M and meets NAS 907 Type C specification, making it appropriate for aerospace and precision manufacturing applications.

Key Features

• Wire size 48 — 0.0760 inch decimal diameter with a tight tolerance of +0.0000 to -0.0005 inches
• 135-degree split point for reduced entry force and improved positional accuracy
• High-speed steel construction rated as heavy-duty grade
• Screw machine length format for increased rigidity in short-reach applications
• Web-thinned parallel web for lower cutting torque and better chip flow
• Meets ASME B94.11M and NAS 907 Type C specification

Compatibility

Designed as an OEM-style replacement or direct-use screw machine drill bit for turret lathes, automatic screw machines, and CNC machining centers requiring wire gauge size 48 tooling in alloy steel and aluminum applications.

Installation Notes

Installation is performed by machinists using a standard collet, chuck, or toolholder appropriate for the 0.0760-inch straight-cylindrical shank. Verify shank concentricity and chuck runout before use to maintain diameter tolerance. Follow applicable shop safety protocols and machine guarding requirements during spindle operation. Do not exceed the rated cutting speed for the workpiece material and tool material combination.