Hertel 48538193 No 11 Hss Threaded Shank Drill Bit

Product Description

The HERTEL 48538193 is a threaded shank drill bit designed for precision drilling in low-tensile strength materials. It carries a No. 11 wire gauge size, equivalent to 0.191 inches in diameter, and features a 135-degree split point for self-centering entry with reduced walking on contact. The shank threads to 1/4-28 for secure chuck engagement. The bit is made from high speed steel with an oxide finish coating for basic corrosion resistance and reduced friction during cutting. Overall length is 2.125 inches with a flute length of 1.125 inches. Right-hand spiral flutes clear chips efficiently during through-hole and short blind-hole drilling operations. Licensed HVAC, plumbing, and electrical technicians use bits like this for sheet metal, bracket, and light structural drilling tasks in the field.

This bit is suited for production and maintenance drilling in low-tensile strength materials such as aluminum, soft steel, plastics, and similar substrates. Its 1/4-28 threaded shank makes it compatible with quick-change threaded chuck systems commonly used in trade and industrial settings. The long-type body classification and tapered web configuration with web thinning reduce thrust requirements and improve chip evacuation, making it practical for repetitive hole-making in thin stock. It conforms to NAS 965 specification requirements, which is relevant in aerospace-adjacent and precision mechanical assembly applications.

Key Features

• No. 11 wire size — 0.191 inches diameter for precise hole sizing
• 135-degree split point with web thinning for self-centering, low-thrust entry
• 1/4-28 threaded hex shank for secure quick-change chuck compatibility
• High speed steel construction rated for general-purpose use in low-tensile strength materials
• Oxide coating provides basic corrosion resistance and reduces heat buildup at the cutting edge
• Conforms to NAS 965 specification

Compatibility

Designed for use with 1/4-28 threaded quick-change drill chuck systems. Suitable for drilling low-tensile strength materials including aluminum, soft steel, and plastics in trade and light industrial applications.

Installation Notes

Install into a 1/4-28 threaded chuck and verify the shank is fully seated and torqued before operation. Disconnect all power sources and de-energize equipment before drilling into live panels, conduit, or mechanical assemblies. Use appropriate cutting fluid or lubricant when drilling metals to extend tool life and maintain hole quality. Wear eye protection and follow applicable OSHA and trade safety requirements during drilling operations.