Hertel 61699476 Screw Machine Drill Bit 0.348 in Hss

Product Description

The HERTEL 61699476 is a screw machine length drill bit designed for high-speed steel cutting in general-purpose machining applications. Built from high speed steel with an oxide finish, this bit features a 0.348 inch diameter (Letter S sizing), a 118-degree standard drill point angle, and a two-flute regular spiral configuration. The shorter-than-jobber body length improves rigidity and reduces deflection in screw machine and turret lathe setups. It is suited for production drilling environments where dimensional consistency and tool life are both critical factors for machinists and tool-room professionals.

This drill bit is intended for use in screw machines, turret lathes, and CNC drilling applications requiring a compact, rigid bit with a straight cylindrical shank. The 3xD flute-to-diameter ratio and 1.75 inch flute length make it appropriate for drilling shallow-to-moderate depth holes in ferrous and non-ferrous materials. The right-hand spiral flute promotes efficient chip evacuation. It ships individually and is ordered in multiples of six, making it practical for production floor stock replenishment.

Key Features

• High speed steel construction with oxide finish for wear resistance and lubricity
• 118-degree standard point angle for general-purpose drilling in a wide range of materials
• Straight cylindrical shank compatible with standard drill chucks and collets
• Two-flute regular spiral design promotes controlled chip evacuation
• Screw machine length body improves rigidity over jobber-length bits in short-hole applications
• ANSI specification designation ensures dimensional conformance

Compatibility

Designed as a general-purpose screw machine length drill bit for use in standard drill chucks and collets accepting a straight cylindrical shank in the 0.300 to 0.350 inch diameter range.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists familiar with rotating cutting tools and machine tool safety. Ensure the machine is fully de-energized and the spindle is at rest before changing tooling. Verify the chuck or collet is clean and properly tightened before operation. Coolant-through operation is not supported on this bit; use appropriate surface-applied cutting fluid when drilling ferrous materials.