Chicago-latrobe 47712 Cobalt Jobber Drill Bit 3/16 in

Product Description

The CHICAGO-LATROBE 47712 is a cobalt jobber length drill bit designed for demanding drilling applications in hard and abrasive materials. Built to Series 550ASP standards and rated NAS 907 Type B, this bit features a 135-degree split point that reduces walking and allows for clean entry without a center punch. The gold finish indicates cobalt content throughout the steel, providing heat resistance during high-speed drilling. The 3/16-inch diameter straight-cylindrical shank pairs with the regular spiral flute geometry to produce efficient chip evacuation and consistent hole quality in production environments. Licensed HVAC techs, plumbers, electricians, and other trade professionals working with hard stock will find this a reliable everyday drilling tool.

This drill bit is suited for drilling titanium, stainless steel, hardened alloys, and other tough workpiece materials where standard high-speed steel bits wear prematurely. The heavy-duty cobalt grade and web-thinned, tapered web configuration reduce thrust requirements and extend tool life in repetitive production drilling or on-site trade work. It is sold individually but carries a minimum order quantity of 12 units, making it practical for shop stocking.

Key Features

• Cobalt steel construction with gold finish for heat resistance and extended tool life in hard materials
• 135-degree split point reduces drill walking and lowers entry thrust requirements
• Web-thinned, tapered web configuration improves cutting efficiency and chip clearance
• Right-hand cut, regular spiral flute with 2 flutes for consistent chip evacuation
• NAS 907 Type B specification compliance for controlled dimensional tolerances
• Straight-cylindrical shank fits standard 3-jaw drill chucks without adapters

Compatibility

Designed as a heavy-duty replacement-grade jobber length drill bit for use in standard 3-jaw drill chucks accepting a 3/16-inch straight-cylindrical shank. Rated for primary use in titanium and other high-strength alloys per NAS 907 Type B specification.

Installation Notes

Install in a properly rated drill press, hand drill, or right-angle drill with a chuck capacity covering 3/16 inch. Ensure the shank is fully seated and the chuck is tightened before operation. Use appropriate cutting fluid or coolant when drilling titanium or stainless steel to manage heat buildup, as dry drilling accelerates edge wear even on cobalt bits. Inspect the cutting edges before each use and replace bits that show chipping or heat discoloration at the tip.