Hertel 74130626 Cobalt Drill Bit Size 11 135 Degree

Product Description

The HERTEL 74130626 is a cobalt screw machine length drill bit designed for demanding drilling applications in ferrous and hard materials. Sized to wire gauge 11 (0.1910 inch decimal), it features a 135-degree split point that reduces walking on contact and requires less feed pressure at entry. The bit runs in a right-hand cutting direction with a regular spiral flute and a straight cylindrical shank. Overall length is 2.25 inches with a flute length of 1.1875 inches, keeping the short overall profile ideal for close-quarters drilling in a drill press or CNC setup. The cobalt construction provides heat resistance beyond standard high-speed steel, making it a practical choice for stainless steel, titanium, and other tough alloys.

This drill bit is suited for metalworking tradespeople, machinists, and maintenance technicians who need a short-length bit for production drilling or repair work. The screw machine length profile is commonly used in turret lathes, drill presses, and CNC machining centers where rigidity and reduced deflection matter. The web-thinned parallel web design reduces thrust load, which is especially useful when drilling harder workpieces at sustained cycle rates.

Key Features

• Wire gauge size 11 - 0.1910 inch decimal diameter
• 135-degree split point reduces walking and lowers entry feed pressure
• Cobalt construction handles heat buildup in hard and abrasive materials
• Screw machine (stub) length for maximum rigidity and reduced deflection
• Web-thinned parallel web decreases thrust load during drilling
• Right-hand cut, regular spiral flute with straight cylindrical shank

Compatibility

Designed as a screw machine length replacement bit for standard 3-jaw drill chucks, collet chucks, and keyed drill press chucks accepting straight cylindrical shanks in the 0.150 to 0.200 inch diameter range.

Installation Notes

Installation is performed by machinists or maintenance technicians using a drill press, turret lathe, or CNC machining center. Secure the shank fully into the chuck and verify runout before beginning a cut. Use cutting fluid or coolant appropriate to the workpiece material to extend tool life, noting this bit does not have through-coolant capability. Inspect the split point for chipping between uses, particularly after drilling hardened or abrasive stock.