Precision Twist Drill 5996404 Taper Length Drill Bit

Product Description

The PRECISION TWIST DRILL 5996404 is a taper length cobalt drill bit engineered for demanding material removal in professional trade and industrial environments. It carries a wire gauge size of #10 (0.1935 inches diameter) and an overall length of 6 inches, with a 3-5/8 inch spiral flute length. The 135-degree split point reduces walking and allows self-centering entry without a center punch. The cobalt tool material provides elevated heat resistance, making it appropriate for drilling hard, abrasive, or work-hardening materials. This bit is used by machinists, maintenance mechanics, pipefitters, and fabricators who require consistent, repeatable hole quality in production settings.

The 5996404 is suited for use in ferrous and non-ferrous materials across a wide range of applications. Compatible material applications include alloy steel, carbon steel, hardened steel, stainless steel, cast iron, malleable iron, aluminum, aluminum alloy, brass, bronze, high strength bronze, copper, magnesium, magnesium alloy, nickel, nickel alloy, reinforced plastic materials, cermet, and graphite. The taper length body provides added rigidity over jobber-length bits, reducing deflection in deeper-hole applications. The right-hand, regular spiral flute configuration handles chip evacuation effectively in both manual and machine drilling setups.

Key Features

• Wire gauge #10 diameter at 0.1935 inches suits close-tolerance hole work
• Cobalt tool material rated for heavy-duty drilling in hard and work-hardening materials
• 135-degree split point design is self-centering and reduces thrust requirements
• Web-thinned, tapered web configuration improves chip clearance and cutting efficiency
• Taper length at 6 inches OAL with 3-5/8 inch flute length provides reach without excessive flex
• Straight shank compatible with standard drill chucks; right-hand cut for conventional drilling
• Meets ANSI standards; Series M52CO heavy-duty classification

Compatibility

Designed for use in standard drill chucks accepting a 0.1935 inch straight shank. Suitable for bench drills, drill presses, and hand-held power drills operating at appropriate speeds for cobalt tooling in the listed material applications.

Installation Notes

Secure the shank fully in the chuck and verify runout before drilling. A licensed machinist or qualified maintenance mechanic should select appropriate spindle speed and feed rate for the specific workpiece material to avoid overheating the cutting edge. Do not apply excessive downward force; let the split point geometry and proper feed rate do the work. Eye protection and chip guards are required per standard shop safety practices.