Chicago-latrobe 41802 60 Pc Wire Drill Bit Set 60 to 1

Product Description

The CHICAGO-LATROBE 41802 is a 60-piece jobber-length drill bit set in wire gauge sizes 60 through 1, built from high-speed steel (HSS) with a titanium nitride (TiN) coating. Each bit features a 135-degree split-point tip for fast engagement and reduced walking on entry, and a right-hand spiral flute geometry with a helix angle ranging from 21 to 34 degrees. The set meets NAS 907 Type B standards, confirming the dimensional accuracy and strength required for aerospace-grade work. HSS construction absorbs shock and vibration better than cobalt or carbide, making this set well-suited for both manual drilling machines and handheld power tools. Bits are stored in a metal index case for organized jobsite use.

This set is intended for drilling steel, stainless steel, and cast iron in production, maintenance, and fabrication environments. The full wire gauge range from 60 to 1 covers precision hole work common in aerospace, automotive, and general metalworking applications. The straight shank and jobber-length flute depth (4x diameter-to-depth ratio) make these bits compatible with standard drill chucks across a wide range of equipment. They are appropriate for use by machinists, maintenance technicians, and fabricators working with ferrous metals.

Key Features

• 60-piece set covering wire gauge sizes 60 through 1 (decimal equivalents 0.0400 to 0.2280 inches)
• High-speed steel construction absorbs shock and vibration better than cobalt or carbide alternatives
• TiN coating extends surface hardness and wear resistance for ferrous metal applications
• 135-degree split-point tip reduces walking and improves centering without a pilot hole
• Meets NAS 907 Type B standard for aerospace-grade accuracy and strength
• Metal index case keeps all 60 sizes organized and accessible

Compatibility

Designed for use in standard straight-shank drill chucks on manual drilling machines and handheld power tools. Primary material applications include steel, stainless steel, and cast iron (ISO material codes P, M, and K).

Installation Notes

These bits are installed and removed by licensed machinists and maintenance technicians using standard keyless or keyed drill chucks. Ensure the drill is fully powered down and the chuck is secured before changing bits. Do not exceed the rated speed range for the bit diameter in use, as excessive RPM in hard ferrous materials accelerates tip wear. Cutting fluid or coolant is recommended when drilling stainless steel or cast iron to manage heat buildup, as these bits are non-coolant-through design.

Technical Specifications

• Number of Drill Bits: 60
• Drill Bit Size Range: 60 to 1 (wire gauge)
• Smallest Bit: 60 (0.0400 inches)
• Largest Bit: 1 (0.2280 inches)
• Drill Length Class: Jobber-Length
• Material: High Speed Steel
• Finish/Coating: Titanium Nitride (TiN)
• Point Angle: 135 degrees
• Point Type: Split Point
• Shank Type: Straight
• Cutting Direction: Right Hand
• Spiral Direction: Right Hand
• Flute Type: Spiral
• Number of Flutes: 2
• Helix Angle: 21 to 34 degrees
• Depth-to-Diameter Ratio: 4x
• Standard: NAS 907 Type B
• Primary Material Application: Steel, Stainless Steel, Cast Iron
• Case Type: Metal Index
• Country of Origin: USA (subject to change)

Standard Information

• Brand: CHICAGO-LATROBE
• Manufacturer Part Number: 41802