Hertel 61698791 Screw Machine Drill Bit 9/64 in Hss

Product Description

The HERTEL 61698791 is a screw machine length drill bit designed for general-purpose drilling in metal, wood, and plastics. Built from high speed steel with an oxide finish, this bit offers solid wear resistance for everyday production and maintenance drilling tasks. It measures 0.1406 inches (9/64 inch) in diameter with a 118-degree standard point angle and a straight-cylindrical shank for use in standard drill chucks and screw machine spindles. At 1-15/16 inches overall length with a 15/16-inch flute, the shorter body provides added rigidity and reduces deflection in shallow-hole applications. Licensed machinists, tool-and-die technicians, and maintenance trades reach for screw machine length bits when rigidity matters more than depth.

This bit is suited for production drilling, CNC turret work, drill press operations, and hand-held power tool use where a compact, rigid drill is preferred over jobber length. The 3xD flute-to-diameter ratio keeps chip clearance efficient in short-hole applications. The two-flute spiral configuration handles a wide range of work materials at standard cutting speeds. ANSI specification designation confirms dimensional conformance for tooling setups that require standardized bit geometry.

Key Features

• High speed steel construction provides durability across a broad range of work materials
• Oxide finish reduces friction at the cutting edge and resists minor corrosion
• 118-degree standard point angle suits general-purpose drilling in metal, plastic, and wood
• Screw machine (stub) length body increases rigidity and minimizes deflection in short-hole drilling
• Straight-cylindrical shank fits standard three-jaw chucks and collet holders
• Right-hand cut with regular spiral flute for efficient chip evacuation
• ANSI conforming geometry for consistent fit in production tooling setups

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with standard drill chucks, screw machine spindles, and collet-style toolholders that accept a straight-cylindrical shank in the 9/64-inch diameter range.

Installation Notes

A licensed machinist or qualified maintenance technician should verify spindle speed and feed rate against published HSS cutting data for the target work material before use. Secure the shank fully in the chuck or collet and confirm runout before beginning a cut. Do not exceed the rated cutting speed for high speed steel tooling, as overheating will shorten tool life. Cutting fluid or coolant is recommended when drilling ferrous metals, even though this bit does not have a through-coolant channel.