Hertel 2386837 5/16 Inch Screw Machine Drill Bit Tin Hss

Product Description

The HERTEL 2386837 is a screw machine length drill bit designed for high-production drilling in metal, plastic, and similar materials. Built from high-speed steel (HSS) with a titanium nitride (TiN) coating, it delivers extended tool life and reduced friction compared to uncoated HSS bits. The 5/16-inch diameter and 135-degree split point allow fast engagement and self-centering entry without a pilot hole. At 2-13/16 inches overall length, the shortened flute-to-shank ratio gives this bit added rigidity, making it well suited for CNC machining centers, drill presses, and turret lathes where chatter and deflection must be minimized.

Screw machine length drill bits are standard tooling in metal fabrication shops, machine shops, and maintenance environments where repetitive hole drilling is performed on ferrous and non-ferrous stock. The 1-5/8-inch flute length handles typical stock thicknesses encountered in production runs. The straight cylindrical shank fits standard drill chucks and collet holders. This bit is a heavy-duty grade tool appropriate for electricians, pipefitters, and fabricators drilling through structural steel, plate, and tubing in the field or on the bench.

Key Features

• TiN coating increases surface hardness and reduces heat buildup during drilling
• 135-degree split point self-centers on entry and reduces required thrust force
• Web-thinned, parallel web construction improves chip evacuation and cutting efficiency
• Screw machine length body provides greater rigidity and reduced deflection versus jobber-length bits
• Right-hand spiral flute pulls chips up and out of the hole during operation
• Heavy-duty grade rating suitable for sustained production drilling applications

Compatibility

Designed as a standard screw machine length replacement drill bit for use in any drill press, CNC machining center, turret lathe, or handheld drill accepting a straight cylindrical shank in the 5/16-inch size range.

Installation Notes

Install in a properly sized drill chuck or collet holder and tighten securely before operation. Power down and de-energize the machine before changing tooling. Verify spindle speed is appropriate for the material and bit diameter before engaging the workpiece. Do not force the bit or exceed the tool's rated cutting envelope, as this can cause premature coating wear or bit failure.