Hertel 66694340 Jobber Drill No 35 135 Deg Tin Hss

Product Description

The HERTEL 66694340 is a No. 35 wire-size jobber-length drill bit engineered for general-purpose holemaking in metal, wood, and composite materials. Built from high speed steel with a titanium nitride (TiN) coating, it delivers extended wear resistance and reduced friction at the cutting edge. The 135-degree split point geometry self-centers on contact, eliminating the need for a center punch on most surfaces. With an overall length of 2-5/8 inches and a flute length of 1-1/2 inches, it is sized for standard jobber-length drilling tasks. This bit is rated as heavy duty and conforms to NAS specification designations, making it a reliable choice for production and maintenance applications.

This drill bit is suited for trade professionals and industrial users performing repetitive holemaking operations in light to medium materials. Its 0.110-inch decimal diameter corresponds to a No. 35 wire gauge size, a dimension commonly required in electrical, HVAC sheet metal, plumbing, and general mechanical assembly work. The straight-cylindrical shank fits standard three-jaw drill chucks found on hand drills, drill presses, and CNC drill setups. Right-hand spiral flutes evacuate chips efficiently during through-hole and blind-hole drilling.

Key Features

• No. 35 wire size, 0.1100-inch decimal diameter for precise fitment in wire-gauge drilling applications
• 135-degree split point with web thinning and tapered web configuration for self-centering starts and reduced thrust
• TiN coating increases surface hardness and extends tool life compared to uncoated HSS
• Regular spiral, 2-flute design promotes consistent chip evacuation in a wide range of materials
• Heavy duty grade construction meets NAS specification requirements
• Straight-cylindrical shank compatible with standard drill chucks

Compatibility

Designed as a standard jobber-length drill bit for use in any three-jaw chuck accepting a 0.1100-inch straight-cylindrical shank, including portable hand drills, bench drill presses, and compatible CNC drilling equipment.

Installation Notes

Install this bit into a properly sized three-jaw chuck and tighten securely before operation. Ensure the drill press or hand drill is powered off and the workpiece is clamped before bit changes. Use appropriate cutting fluid or lubricant when drilling ferrous metals to preserve coating life and edge sharpness. Discard the bit if the cutting edges show visible chipping or if the TiN coating is worn through at the tip, as reduced geometry accuracy can affect hole tolerance.