Precision Twist Drill 5997620 Jobber Length Drill Bit

Product Description

The PRECISION TWIST DRILL 5997620 is an 11/64 inch (0.1719 inch) jobber length drill bit designed for general-purpose drilling across a wide range of materials. Built from high speed steel with a steam oxide coating, it features a 135-degree split-point tip that reduces walking and lowers thrust force at the start of the cut. The right-hand spiral flute design evacuates chips efficiently during through-hole and blind-hole operations. With an overall length of 3.25 inches and a flute length of 2.125 inches, this bit fits standard drill chucks and drill presses used daily in metal fabrication, maintenance, and mechanical trades.

The 5997620 is suited for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. It carries NAS 907 specification compliance and meets ANSI standards, making it appropriate for aerospace, industrial maintenance, and general metalworking applications. The straight-cylindrical shank diameter of 0.1719 inch mates directly with standard keyed or keyless chucks. Its 12xD flute-to-diameter ratio provides the reach typical of jobber length bits used in bench drill presses and handheld electric drills on production and field work alike.

Key Features

• 135-degree split point reduces drill walk and starting thrust on hard materials
• Steam oxide coating provides mild lubricity and corrosion resistance during storage and use
• Web-thinned, tapered-web design lowers cutting resistance and heat buildup
• Right-hand, regular-spiral flutes with 2-flute configuration for efficient chip evacuation
• NAS 907 specification compliance for aerospace and industrial use
• Heavy-duty grade HSS construction rated for steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium

Compatibility

Rated for use on steel, stainless steel, cast iron, non-ferrous metal, superalloys, and titanium workpieces (material codes P, M, K, N, S). Straight-cylindrical shank fits standard drill chucks accepting 11/64 inch shanks. Part of the R10B-R15B-R18B series.

Installation Notes

Installation is performed by machinists, maintenance technicians, or metalworkers using a standard drill press or handheld electric drill. Secure the shank fully in the chuck before operation and verify chuck key is removed before starting. Use cutting fluid or coolant appropriate to the workpiece material to extend bit life, particularly when drilling stainless steel, superalloys, or titanium. Note that coolant-through is not supported by this bit design.