Chicago-latrobe 41699 Jobber Drill Bit 29 Wire Tin Hss

Product Description

The CHICAGO-LATROBE 41699 is a jobber-length drill bit from the Series 150ASP-TN, designed for high-performance drilling in demanding trade and industrial applications. Built from high speed steel (HSS) with a titanium nitride (TiN) coating, it carries a wire gauge size of No. 29, which corresponds to 0.1360 inches in decimal. The 135-degree split point reduces walking on entry and lowers the thrust required to initiate a cut. Overall length is 2-7/8 inches with a flute length of 1-3/4 inches. The straight-cylindrical shank measures 1.125 inches in diameter and seats securely in standard drill chucks. This is a heavy-duty grade bit rated to NAS 907 Type B standards.

This drill bit is suited for use on cast iron, stainless steel, and carbon steel workpieces in fabrication, maintenance, and mechanical assembly environments. The right-hand spiral flute with regular helix evacuates chips efficiently in through-hole and blind-hole drilling. The TiN coating extends tool life by reducing friction and surface heat at the cutting edge. This bit is appropriate for machinists, pipefitters, ironworkers, millwrights, and maintenance technicians working with metal substrates in both shop and field settings. It is sold individually and is compatible with standard drill presses, hand drills, and drill-motor setups that accept a straight-cylindrical shank.

Key Features

• Wire gauge No. 29 diameter — 0.1360 inches decimal equivalent
• 135-degree split point reduces thrust and minimizes bit walking on hard metals
• Titanium nitride (TiN) coating increases surface hardness and extends tool life
• High speed steel construction rated for cast iron, stainless steel, and steel workpieces
• Web-thinned, tapered web design improves chip clearance and cutting efficiency
• Meets NAS 907 Type B specification — heavy-duty grade for production and MRO use

Compatibility

Designed as an OEM-style jobber-length drill bit for use in standard drill chucks accepting a straight-cylindrical shank. Rated for primary use on cast iron, stainless steel, and steel workpieces per manufacturer specification.

Installation Notes

Installation is performed by machinists, maintenance technicians, or trade professionals using a drill press, magnetic drill, or hand drill motor with a keyed or keyless chuck. Ensure the shank is fully seated and secured in the chuck before operation. Appropriate cutting fluid or coolant should be applied when drilling stainless steel or hardened steel to manage heat buildup at the cutting edge. Inspect the cutting edges and TiN coating for wear before each use and replace the bit if chipping or excessive dulling is observed.