Chicago-latrobe 43630 Jobber Drill Bit 15/32 in Ticn Hss

Product Description

The CHICAGO-LATROBE 43630 is a jobber length drill bit designed for high-performance drilling in tough materials. Built from M7 high speed steel with a titanium carbonitride (TiCN) coating, it delivers extended tool life and reduced friction in demanding applications. The bit measures 15/32 inch (0.4688 inch decimal) in diameter with a 5-3/4 inch overall length and a 135-degree split-point tip that self-centers on contact and reduces walking on entry. Web-thinned construction lowers thrust requirements. This is a heavy-duty grade bit suited for machinists, tool and die shops, and skilled tradespeople working with ferrous and hard metals.

The 43630 is well suited for drilling cast iron, stainless steel, and carbon steel in production and maintenance environments. Its right-hand spiral flute design promotes efficient chip evacuation during through-hole and blind-hole operations. The straight-cylindrical shank seats securely in standard three-jaw drill chucks and compatible toolholders. Typical applications include fabrication shops, industrial maintenance, and precision drilling tasks where surface finish and dimensional accuracy at the entry and exit point matter.

Key Features

• M7 high speed steel construction rated for heavy-duty, high-performance drilling
• TiCN coating reduces friction and extends cutting edge life versus uncoated HSS
• 135-degree split point self-centers and reduces thrust on hard workpiece materials
• Web-thinned, tapered web configuration lowers drilling resistance
• Regular spiral flute promotes consistent chip clearing in cast iron, stainless steel, and steel
• Straight-cylindrical shank fits standard drill chucks and most toolholding setups
• Meets NAS 907 Type B specification for dimensional and performance compliance

Compatibility

Designed for use on cast iron, stainless steel, and steel workpieces. Compatible with standard three-jaw drill chucks accepting a 15/32 inch straight-cylindrical shank. Conforms to NAS 907 Type B specification.

Installation Notes

Install in a drill press, milling machine, or hand drill with an appropriately sized chuck before powering the machine. Ensure the shank is fully seated and the chuck is tightened securely before starting the cut. Use cutting fluid or coolant appropriate for the workpiece material to maximize tool life, especially when drilling stainless steel. Inspect the cutting edges before each use and replace if chipping or wear is observed.