Hertel 2386654 Drill Bit Wire Size 58 0.0420 in Hss

Product Description

The HERTEL 2386654 is a screw machine length drill bit designed for high-speed steel cutting in close-tolerance drilling operations. Built from high-speed steel with an oxide finish, this bit carries a wire size 58 designation, which corresponds to a decimal diameter of 0.0420 inches. The 135-degree split point reduces walking on entry and lowers thrust requirements compared to conventional 118-degree geometry. Web-thinned construction keeps cutting action efficient in small-diameter applications. At 1.375 inches overall length, this stub-length format delivers rigidity in drill press, CNC, and screw machine setups. It is sold individually with a minimum order quantity of 12 units.

This bit is suited for production drilling in light metals, plastics, and mild steel where a compact, rigid tool is required. The screw machine length format is a common choice in automated screw machine work, production cells, and bench-top drill press operations. The straight-cylindrical shank accepts standard drill chucks and collet holders without modification. The right-hand spiral flute clears chips efficiently during through-hole and blind-hole drilling at wire gauge diameters. Licensed machinists, tool-and-die technicians, and production floor operators are the primary users of this product.

Key Features

• Wire size 58 diameter: 0.0420 inches for precision small-hole work
• 135-degree split point reduces thrust and prevents bit walking on entry
• Web-thinned, parallel web construction for efficient chip evacuation
• High-speed steel with oxide coating for heat and wear resistance
• Screw machine (stub) length at 1.375 inches OAL provides superior rigidity over jobber-length bits
• Straight-cylindrical shank fits standard drill chucks and collet holders

Compatibility

Designed as a standard straight-shank screw machine length drill bit compatible with any drill chuck or collet holder sized to accept a 0.0420-inch diameter straight shank.

Installation Notes

This bit should be installed in a properly rated drill chuck or collet and secured before starting any spindle rotation. Verify spindle speed is appropriate for the workpiece material and bit diameter before drilling. Inspect the cutting edges for wear or chipping before each use, as small-diameter bits are susceptible to breakage under side load or excessive feed pressure. Coolant-through capability is not supported on this tool; apply cutting fluid externally when drilling metals where heat buildup is a concern.