Walter-titex 5062918 Cobalt Micro Drill Bit Wire 66

Product Description

The WALTER-TITEX 5062918 is a cobalt micro drill bit designed for precision drilling in demanding materials where tight tolerances are required. Built to DIN 1899 standards, it carries a wire gauge size of 66, equating to 0.0331 inches in decimal diameter, with a 118-degree standard point angle. The cobalt construction provides heat resistance and edge retention well beyond standard high-speed steel tooling. At 25 mm overall length with a 5.30 mm spiral flute and a straight-cylindrical shank diameter of 1.50 mm, this bit is engineered for micro-drilling applications where precision and repeatability are non-negotiable. It ships uncoated with a bright finish.

This drill bit is suited for blind hole, through hole, and stack drilling operations. Its primary design targets titanium alloy workpieces, with secondary capability in glass and graphite materials. The 5xD flute-to-diameter ratio and web-thinned, tapered web configuration support chip evacuation in these difficult-to-machine materials. Typical use cases include aerospace component drilling, precision instrument manufacturing, and specialty fabrication shops where micro-diameter tooling in cobalt is specified by engineering. The right-hand cutting direction and spiral flute geometry are standard for CNC and manual drill press setups in these environments.

Key Features

• Cobalt tool material for enhanced heat resistance and wear life in hard and abrasive workpieces
• 118-degree standard point angle with web-thinned, tapered web for accurate point placement and reduced thrust
• Wire size 66 (0.0331 inches) with diameter tolerance of +0.000 to -0.004 mm for tight-tolerance drilling
• Spiral flute, right-hand cut, straight-cylindrical shank for compatibility with standard collets and chucks
• Rated for blind hole, through hole, and stack drilling in titanium alloy, glass, and graphite
• Conforms to DIN 1899 specification for consistent interchangeability and quality assurance

Compatibility

The 5062918 belongs to WALTER-TITEX Series A3143 and is built to DIN 1899 standards. Primary workpiece material compatibility includes titanium alloy (material codes K, N, P, S) and secondary compatibility includes glass and graphite (material codes M, O). Shank diameter is 1.50 mm, fitting collets and tool holders sized for that dimension.

Installation Notes

Installation and use of this micro drill bit should be performed by a qualified machinist or tooling technician familiar with micro-diameter tooling. Secure the straight-cylindrical shank in a collet or chuck rated for 1.50 mm diameter shanks and verified for runout before drilling. Due to the small diameter, reduce feed rates and verify spindle speed recommendations for the specific workpiece material before starting a cut. Inspect the cutting edge under magnification prior to use, as micro drill bits are susceptible to damage during handling.