Hertel 84581149 Jobber Drill Bit No 40 Hss 135 Deg

Product Description

The HERTEL 84581149 is a No. 40 wire-size jobber-length drill bit designed for general-purpose holemaking in metal, wood, and composite materials. The bit is ground from high speed steel and carries an oxide coating that provides light lubricity and corrosion resistance during cutting. The 135-degree split point reduces walking on entry and lowers the thrust required to start a hole without a center punch. Overall length is 2-3/8 inches with a 1-3/8-inch flute length. With a straight-cylindrical shank diameter of 0.098 inches, it seats directly in standard drill chucks and collets. Licensed trades and maintenance mechanics install this bit for light-duty precision drilling applications.

This drill bit is sized at 0.0980 decimal inches, placing it in the No. 40 wire gauge category. It is suited for residential and light commercial maintenance work, sheet metal fabrication, HVAC bracket drilling, electrical panel knockout prep, and plumbing rough-in tasks requiring small-diameter holes. The regular spiral flute with tapered web and web-thinned geometry promotes efficient chip evacuation in shallow-to-moderate depth holes. This bit is sold individually but requires a minimum order of 12 units per purchase.

Key Features

• No. 40 wire size, 0.0980-inch decimal diameter for precision small-hole drilling
• 135-degree split point reduces entry walking and cutting thrust
• High speed steel construction with oxide coating for light lubricity and corrosion resistance
• Web-thinned, tapered web geometry promotes clean chip evacuation
• Regular right-hand spiral flute, 2-flute configuration
• Straight-cylindrical shank fits standard chucks and collets without modification

Compatibility

Designed as a standard jobber-length replacement drill bit compatible with any drill chuck or collet accepting a 0.098-inch straight-cylindrical shank across the No. 40 wire-size range per NAS specification.

Installation Notes

Install and remove this bit only with the drill or driver fully powered off and the chuck key removed from the chuck. Secure the workpiece before drilling to prevent rotation or movement during cutting. For best results in metal, use cutting fluid appropriate to the base material to extend bit life. Dispose of worn bits per local sharps and metal waste guidelines.