Precision Twist Drill 5997796 Jobber Drill Bit No 5

Product Description

The PRECISION TWIST DRILL 5997796 is a No. 5 wire-gauge jobber-length drill bit machined from high speed steel with a steam oxide coating for improved lubricity and corrosion resistance. At 0.2055 inches in diameter, it runs a 135-degree split-point tip that reduces walking on entry and lowers thrust force compared to a 118-degree standard point. The two-spiral flutes measure 2.5 inches in length, giving the bit a 12xD flute-to-diameter ratio suited for general-purpose drilling in production and maintenance environments. Overall length is 3.75 inches with a straight cylindrical shank of 0.2055 inches diameter. The bit follows ANSI standards and carries the NAS 907 specification designation for heavy-duty service.

This bit is designed for drilling into steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. The regular spiral geometry moves chips efficiently out of the hole during through-drilling operations. Its jobber length makes it a practical choice for hand-drill, drill press, and CNC machine use across fabrication shops, maintenance facilities, and field service work. The tapered web with web-thinning keeps cutting forces manageable when working harder alloys.

Key Features

• 135-degree split-point tip reduces bit walking and entry thrust on hard materials
• High speed steel construction with steam oxide coating for lubricity and light corrosion protection
• NAS 907 specification, ANSI standard, heavy-duty grade
• 2.5-inch spiral flute length with regular spiral and tapered web-thinning for efficient chip evacuation
• Straight cylindrical shank fits standard drill chucks without adapters
• Compatible with steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium workpieces

Compatibility

Designed as a general-purpose jobber-length replacement bit for No. 5 wire-gauge applications across drill presses, hand drills, and CNC machining centers that accept a straight cylindrical shank. Series R10B, R15B, and R18B.

Installation Notes

Installation is performed by machinists, maintenance technicians, and trade professionals using a standard drill chuck. Secure the shank fully in the chuck and verify runout before drilling. When drilling stainless steel or superalloys, use appropriate cutting fluid to extend tool life and manage heat buildup. Never exceed the recommended maximum drilling depth of 2.5 inches for this bit length.