IVY Classic Jobber Length Drill Bit 10428 7/16 Inch Cobalt Steel 6 Pack (Reduced 3/8 Inch Shank 135 Degree Split Point Hard Metal)

IVY Classic 7/16-Inch Cobalt Steel Jobber Length Drill Bit 6-Pack

The IVY Classic 10428 7/16-Inch Cobalt Steel Drill Bit 6-Pack delivers heavy-duty penetration and thermal endurance when penetrating high-tensile alloys and structural metal stock. Manufactured from precision-ground cobalt alloy steel with a gold oxide finish, each jobber length bit features a 135-degree split point tip that self-centers instantly to prevent bit walking. A reduced 3/8-inch shank allows these 7/16-inch diameter bits to operate smoothly in standard 3/8-inch drill chucks for metalworking fabrication.

Best Used For:

• Stainless Steel Drilling: Cutting through hardened stainless steel plates and structural tubing without dulling the bit edge.
• Hard Metal Fabrication: Machining tough cast iron, titanium alloys, high-carbon steel, and bronze stock.
• General Maintenance & Repair: Enlarging existing fastener holes and making accurate passes through dense plastic and hardwood.

Key Performance & Safety Features

• Cobalt Steel Composition: Formulated to maintain cutting edge hardness at extreme operating temperatures generated by high-friction alloy drilling.
• 135-Degree Split Point: Self-centering tip layout eliminates the need for center punches by penetrating workpieces on contact without walking.
• Reduced 3/8-Inch Shank: Step-down shank design enables a 7/16-inch cutting diameter to seat securely inside standard 3/8-inch driver chucks.
• Gold Oxide Finish: Precision-ground surface coating reduces chip welding and facilitates rapid thermal dissipation during high-speed feed rates.
• Jobber Length Flutes: Rigid standard flute length maximizes chip clearance and resists torsional bending forces under load.

What's Included

• (6) IVY Classic 7/16-Inch Cobalt Steel Jobber Length Drill Bits with 3/8-Inch Reduced Shank

Technical Specifications

Pro-Tip: When drilling stainless steel or titanium, maintain low spindle speeds with firm, constant pressure and apply cutting fluid directly to the flute tip to maximize bit life and prevent thermal hardening of the workpiece.