Hertel 2385938 Screw Machine Drill Bit 17/64 in Hss

Product Description

The HERTEL 2385938 is a screw machine length drill bit designed for high-volume drilling in metal, wood, and plastic. It features a 17/64 inch (0.2656 inch decimal) diameter and a 135-degree split point that reduces walking on entry and lowers thrust force compared to standard 118-degree geometry. The oxide-coated high-speed steel body resists heat buildup during extended cutting cycles. At 2-5/8 inches overall length, this stub-style bit fits short-reach applications where a jobber-length bit would flex or chatter. Web thinning improves chip evacuation and reduces the torque required at the spindle. Machinists, tool-and-die technicians, and maintenance mechanics are the primary users.

This bit is suited for production drilling on drill presses, CNC machining centers, and turret lathes in both light manufacturing and maintenance-repair environments. Its screw machine length makes it well matched to tight-clearance fixturing and short-travel drill heads. The straight-cylindrical shank seats directly in standard three-jaw chucks and quick-change collets without adapters. Regular-spiral fluting and parallel web geometry are appropriate for general-purpose ferrous and non-ferrous materials at moderate feed and speed settings.

Key Features

• 135-degree split point reduces drill walk and lowers entry thrust force
• Oxide-coated high-speed steel construction provides heat and wear resistance
• Web-thinned parallel web improves chip clearance and reduces torque demand
• Screw machine (stub) length of 2-5/8 inches overall suits tight-clearance setups
• 1-7/16 inch flute length supports through-hole and blind-hole drilling at this diameter
• Straight-cylindrical shank compatible with standard chucks and collets without adapters

Compatibility

Designed as a general-purpose screw machine length drill bit fitting standard three-jaw chucks and collet systems that accept straight-cylindrical shanks at 17/64 inch diameter.

Installation Notes

Installation is performed by machinists or maintenance mechanics. Secure the shank fully in the chuck or collet before applying power, and verify runout before drilling production parts. Follow machine manufacturer speed and feed tables for the specific workpiece material. Wear appropriate eye protection and ensure the workpiece is clamped or fixtured — never hand-hold small parts during drilling.