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The HERTEL 85703379 is a jobber-length twist drill bit designed for general-purpose drilling in metal, wood, and plastics. Ground from high speed steel (HSS) with a bright, uncoated finish, it runs a standard 118-degree split point and a two-flute spiral configuration for efficient chip evacuation. The straight-cylindrical shank seats securely in standard 3-jaw chucks. With an overall length of 2.25 inches and a flute length of 1.25 inches, this bit fits the proportions that machinists and fabricators expect from a 3/32-inch jobber. The web-thinned, tapered-web construction reduces feed pressure at the cutting edge, making hand-held and bench drilling operations more controllable.
This bit is suited to light-duty drilling tasks common in HVAC, plumbing, electrical, and general metal fabrication work. Typical applications include pilot holes for self-tapping fasteners, sheet metal penetrations, and conduit or bracket work where a small-diameter, precision hole is required. Its jobber-length profile balances reach and rigidity, making it practical for both drill press and handheld cordless or corded drill use in the field or shop.
Designed as a general-purpose replacement or stock bit for any application requiring a 3/32-inch straight-shank jobber-length drill bit in standard 3-jaw or keyed chuck setups.
Installation and use should be performed by qualified tradespeople or machinists familiar with rotary cutting tools. Secure the shank fully in the chuck before operation and verify the bit runs true before engaging the workpiece. Always wear appropriate eye protection when drilling. Inspect the cutting edges before each use and retire the bit if chipping or excessive wear is observed.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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