Hertel 04138814 Cobalt Jobber Drill No. 34 135-deg Point

Product Description

The HERTEL 04138814 is a cobalt jobber-length drill bit sized to wire gauge No. 34 (0.1110 inches decimal). It features a 135-degree split point with web thinning for fast penetration and reduced walking on entry. The oxide and TiN coating improves surface hardness and heat resistance during high-duty-cycle drilling. The straight-cylindrical shank seats in standard three-jaw chucks. With an overall length of 2-5/8 inches and a flute length of 1-1/2 inches, this bit handles typical jobber-depth holes in metal. It is suited for machinists, pipefitters, electricians, and HVAC technicians drilling ferrous and non-ferrous stock.

This bit is intended for holemaking in hard and abrasive materials where high-speed steel bits wear prematurely. The heavy-duty cobalt construction handles stainless steel, cast iron, hardened alloys, and similar materials encountered in mechanical, plumbing, and electrical trade work. The right-hand spiral flute with regular spiral geometry provides efficient chip evacuation in through-hole and blind-hole applications. It is sold individually (package quantity of 1) with a minimum order quantity of 12 units per purchase.

Key Features

• Cobalt construction with oxide and TiN coating for extended tool life in hard materials
• 135-degree split point with web thinning reduces entry force and eliminates center-punch requirement on most metals
• Right-hand regular spiral flute promotes reliable chip clearing
• Straight-cylindrical shank fits standard drill chucks without adapters
• Wire gauge No. 34 sizing at 0.1110 inches decimal for precise pilot and clearance holes
• Heavy-duty grade rated for interrupted cuts and high-cycle production use

Compatibility

Designed as a standard jobber-length drill bit for use in any three-jaw chuck or drill press accepting a 0.1110-inch straight-cylindrical shank across the 0.1000 to 0.1500 inch drill bit size range.

Installation Notes

A licensed or experienced tradesperson should secure the shank fully in a keyed or keyless chuck before operation. Always power down or unplug the drill press or hand drill before changing bits. Use appropriate cutting fluid or coolant when drilling hardened alloys to prevent premature bit wear. Eye protection is required during all drilling operations per standard shop safety practice.