Walter-titex 5062871 Micro Drill Bit Wire 79 Cobalt

Product Description

The WALTER-TITEX 5062871 is a cobalt micro drill bit engineered for precision drilling in demanding materials. Built to DIN 1899 standards, this wire gauge size 79 bit measures 0.0146 inches (0.37 mm) in diameter with a 25 mm overall length and a 118-degree standard point angle. The M35 cobalt steel construction provides elevated heat resistance and edge retention compared to standard HSS tooling, making it suitable for hard and abrasive workpieces. The web-thinned, tapered web design reduces thrust force and improves hole entry accuracy at this scale. Right-hand spiral flutes evacuate chips efficiently during blind hole and through-hole operations. This bit is sold individually with a minimum order quantity of 10 units.

The 5062871 is designed for precision micro-drilling applications where tight tolerances and material integrity are critical. Primary workpiece materials include titanium alloys and other difficult-to-machine metals classified under ISO material groups K, N, P, and S. Secondary applications cover glass and graphite (material groups M and O). Typical use cases include blind hole drilling, through-hole drilling, and stack drilling in aerospace, medical, and precision manufacturing environments. The straight-cylindrical shank with a 1.00 mm diameter fits standard micro-drill chucks and collet holders. Maximum drilling depth is 1.80 mm, with a flute-by-diameter ratio of 5xD.

Key Features

• M35 cobalt construction for extended tool life in titanium alloys and hard metals
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• Wire gauge size 79 (0.0146 inches decimal) conforming to DIN 1899
• Right-hand cut with regular spiral flutes for effective chip evacuation in micro-scale bores
• Bright/uncoated finish; no coolant-through requirement simplifies setup
• Supports blind hole, through-hole, and stack drilling applications
• Diameter tolerance of +0.000 to -0.004 mm for consistent, repeatable hole sizing

Compatibility

Designed as a DIN 1899 Series A3143 micro drill bit for use in standard straight-cylindrical collet holders and micro-drill chucks accepting a 1.00 mm shank diameter. Rated for primary use in titanium alloys (ISO material codes K, N, P, S) and secondary use in glass and graphite (ISO material codes M, O).

Installation Notes

Micro drill bits at this diameter are installed by trained machinists or toolroom technicians using precision collet chucks rated for the 1.00 mm shank diameter. Ensure the spindle and workpiece fixture are secure before operation to prevent deflection and bit breakage at this scale. At 0.0146 inches diameter, even minor runout or side load can cause immediate tool failure; verify chuck runout with a test indicator before production runs. Follow the machine manufacturer and applicable shop safety protocols when handling and storing micro-diameter tooling.