Precision Twist Drill 5998655 23/64 in Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5998655 is a screw machine length drill bit designed for high-performance drilling in demanding trade and industrial applications. Sized at 23/64 inch (0.3594 inches) in diameter, it is manufactured from high speed steel with a bright, uncoated finish. The bit features a 118-degree standard point angle, a spiral flute with a regular spiral type, and a web-thinned, tapered web configuration that reduces cutting resistance at the tip. Overall length is 3-1/16 inches, making it well suited for work in confined spaces where a jobber-length bit would be unwieldy. Licensed machinists, HVAC fabricators, pipefitters, and general trade mechanics are the typical installers.

This drill bit is rated for use on titanium as the primary workpiece material, which also positions it for use in stainless steel and other harder alloys encountered in trade service work. The R40 series designation indicates a general-purpose, high-performance grade conforming to ANSI standards. The screw machine length body and 2.5xD flute-to-diameter ratio allow efficient chip evacuation during short, repetitive drilling cycles common in production and field service environments. Flute length is 1-3/4 inches. Coolant-through capability is not included.

Key Features

• 23/64 inch diameter (0.3594 inches) for precise hole sizing
• High speed steel construction rated for titanium and hard alloy workpieces
• 118-degree standard point angle with web-thinned, tapered web for reduced entry force
• Screw machine length body at 3-1/16 inches overall for compact clearance applications
• Right-hand spiral flute with 2.5xD ratio for efficient chip evacuation
• Conforms to ANSI standards, Series R40

Compatibility

Designed as a general-purpose screw machine length drill bit within the 0.3500 to 0.4000 inch decimal inch size range, compatible with standard straight-shank drill chucks and screw machine setups that accept cylindrical shanks.

Installation Notes

This bit is installed by machinists, fabricators, or trade mechanics using any drill press, hand drill, or milling machine fitted with a standard chuck that accepts a straight-cylindrical shank. Ensure the workpiece is securely clamped and the spindle speed is appropriate for the workpiece material before beginning. Wear appropriate eye protection and secure loose clothing around rotating equipment. Follow applicable shop safety codes when operating drilling equipment.