Hertel 61699518 No. 42 Screw Machine Drill Bit Hss

Product Description

The HERTEL 61699518 is a screw machine length drill bit designed for short-hole drilling applications where rigidity and accuracy are the priority. Sized to wire gauge No. 42 (0.0935 inches decimal equivalent), this bit features a 118-degree standard point angle and is manufactured from high-speed steel (HSS) with an oxide coating for improved lubricity and basic corrosion resistance. The two-flute spiral design with a regular helix promotes efficient chip evacuation in general-purpose materials. Overall length is 1.75 inches with a 0.75-inch flute length, making it notably shorter and stiffer than jobber-length equivalents. It is installed in standard drill chucks or collet holders by machinists, tool-and-die workers, and maintenance technicians.

This bit is suited for light drilling operations in metal, plastic, and composite materials where hole location accuracy and minimal deflection are required. The screw machine length (stub) format makes it a practical choice for drill press work, CNC machining centers, and turret lathe operations where clearance is limited or a shorter cutting tool reduces runout. The ANSI specification designation confirms dimensional conformance to recognized industry standards. General-purpose grade construction covers a wide range of common production and maintenance drilling tasks.

Key Features

• Wire size No. 42 diameter - 0.0935 inches decimal equivalent
• 118-degree standard point angle for general-purpose entry and centering
• High-speed steel construction for durability across ferrous and non-ferrous materials
• Oxide coating provides surface lubricity and basic corrosion protection
• Screw machine (stub) length - 1.75 inches OAL - reduces deflection vs. jobber-length bits
• Right-hand cut with straight-cylindrical shank for standard chuck compatibility
• Two-flute regular spiral design promotes controlled chip evacuation

Compatibility

Designed as a general-purpose screw machine length drill bit conforming to ANSI specification, compatible with standard straight-shank drill chucks and collet systems accepting a 0.0935-inch shank diameter.

Installation Notes

Installation is performed by machinists or maintenance technicians using a keyed or keyless drill chuck or appropriately sized collet. Ensure the shank is fully seated and the chuck or collet is tightened before operation. For best results in small-diameter drilling, use a center punch or spot drill to establish the entry point before drilling through. Match spindle speed to the material being drilled in accordance with standard machining feeds-and-speeds practice for HSS tooling.