Chicago-latrobe 45683 Jobber Drill Bit No.13 Hss 135 Deg

Product Description

The CHICAGO-LATROBE 45683 is a jobber-length, high-speed steel drill bit designed for heavy-duty drilling in demanding shop and field applications. It carries a No. 13 wire size designation with a decimal diameter of 0.1850 inches and features a 135-degree split-point tip that self-centers on contact, reducing walk on hard or curved surfaces. The oxide coating provides a mild layer of corrosion resistance and reduces friction during cutting. At 3.5 inches overall length with a 2.3125-inch flute, this bit fits standard drill chucks and is sized for production and maintenance drilling by machinists, pipefitters, and millwrights.

This bit is suited for drilling cast iron, stainless steel, and carbon steel in both production and maintenance environments. The regular-spiral, two-flute design clears chips efficiently in these materials. The straight cylindrical shank with a 1.1875-inch shank length seats securely in keyed or keyless chucks on hand drills, drill presses, and CNC machines. It meets NAS 907 Type B standards, making it appropriate for aerospace and precision manufacturing contexts where specification conformance is required.

Key Features

• 135-degree split-point tip self-centers and reduces thrust on hard materials
• High-speed steel construction rated for heavy-duty, high-performance cutting
• Oxide finish reduces friction and provides mild corrosion resistance
• Web-thinned, tapered web design lowers cutting resistance and improves chip evacuation
• Meets NAS 907 Type B specification for precision and aerospace applications
• Right-hand cut, two-flute spiral configuration for efficient material removal

Compatibility

Designed as an OEM-style jobber-length drill bit for use in standard straight-shank drill chucks across hand drills, drill presses, and CNC equipment. Primary workpiece materials listed by the manufacturer are cast iron, stainless steel, and steel.

Installation Notes

Install in a properly rated drill chuck and verify the shank is fully seated before operation. Secure the workpiece before drilling to prevent rotation or movement. Use appropriate cutting fluid when drilling stainless steel or hardened steel to manage heat buildup and extend tool life. Replace the bit if tip geometry is compromised, as a damaged split point will reduce accuracy and increase heat.