Chicago-latrobe 46724 Size 54 Cobalt Jobber Drill Bit

Product Description

The CHICAGO-LATROBE 46724 is a wire gauge size 54 jobber length drill bit engineered for high-performance drilling in hard and abrasive materials. Built from M42 cobalt high-speed steel with a gold oxide coating, this bit delivers extended tool life compared to standard HSS tooling. The 135-degree split point reduces walking and lowers thrust force at entry, making it a reliable choice for precision work. With an overall length of 1.875 inches and a straight cylindrical shank diameter of 0.0550 inches, it fits standard drill chucks without adapters. It meets DIN 338 and NAS 907 Type J standards, confirming dimensional and performance conformance for professional use.

This drill bit is rated for use on titanium as its primary workpiece material, making it well suited for aerospace, automotive, and industrial maintenance applications where hard metals are common. The regular spiral flute and web-thinned, tapered web configuration promote chip evacuation and reduce cutting resistance in tough alloys. It is sized for precision work requiring a 0.0550-inch diameter hole. Licensed tradespeople and shop machinists working in production or field environments will find this bit appropriate for repetitive drilling cycles where tool durability matters.

Key Features

• M42 cobalt HSS construction for heavy-duty performance in hard metals including titanium
• 135-degree split point reduces thrust and prevents walking on entry
• Gold oxide coating provides lubricity and corrosion resistance during cutting
• Web-thinned tapered web reduces cutting resistance and improves chip flow
• Meets DIN 338 and NAS 907 Type J dimensional and performance standards
• Right-hand cut with regular spiral flute and straight cylindrical shank for standard chuck compatibility

Compatibility

Designed as a Series 550 jobber length drill bit conforming to NAS 907 Type J and DIN 338 specifications, suitable for use in standard drill chucks and drill presses accepting a 0.0550-inch straight cylindrical shank.

Installation Notes

This drill bit is installed by machinists, toolroom technicians, and maintenance professionals using standard drill chucks or collet holders rated for the 0.0550-inch shank diameter. Secure the shank fully in the chuck before beginning drilling to prevent runout. Use cutting fluid or lubricant appropriate for the workpiece material to extend bit life, particularly when drilling titanium or other work-hardening alloys. Inspect the cutting edges and point for wear or chipping before each use cycle.