Chicago-latrobe 41618 9/32 in Jobber Drill Bit Tin Hss

Product Description

The CHICAGO-LATROBE 41618 is a jobber-length twist drill bit designed for demanding metal-cutting applications in trade and industrial environments. Built from high-speed steel with a titanium nitride (TiN) coating, it delivers extended tool life and reduced friction compared to uncoated HSS. The 135-degree split point reduces walking on entry and requires no center punch on most surfaces. At 4.25 inches overall length with a 2.9375-inch flute, it fits standard drill chucks and is sized for use in hand drills, drill presses, and magnetic-base drills. This bit is a go-to for HVAC, pipefitting, and mechanical contractors drilling through ferrous metals on the job.

The 41618 is rated for cast iron, stainless steel, and carbon steel. Its straight cylindrical shank with a diameter of 0.281 inches seats securely in standard three-jaw chucks. The regular spiral flute geometry clears chips efficiently in through-hole and blind-hole drilling. This bit fits the Series 150ASP-TN product line and meets NAS 907 Type B standards, making it appropriate for aerospace-adjacent maintenance and heavy industrial work as well as general trade use.

Key Features

• TiN coating extends tool life and reduces heat buildup during prolonged drilling
• 135-degree split point self-centers on contact, eliminating the need for a center punch on flat stock
• Web-thinned, tapered web construction reduces thrust force and improves chip evacuation
• Right-hand cut spiral flute for standard drill press and hand-drill operation
• Meets NAS 907 Type B specification for high-performance heavy-duty drilling
• Straight cylindrical shank fits standard three-jaw chucks without adapters

Compatibility

Designed for use in any standard drill press, hand drill, or magnetic-base drill accepting a straight cylindrical shank. Rated for primary workpiece materials including cast iron, stainless steel, and steel per NAS 907 Type B specification.

Installation Notes

This bit is installed and operated by HVAC technicians, pipefitters, electricians, and general mechanical contractors. Always confirm chuck capacity matches the shank diameter before seating the bit. Apply cutting fluid when drilling stainless steel or cast iron to extend bit life and manage heat. Inspect the cutting edges before each use and replace if chipping or dulling is observed.