Disston Company 197544 Cobalt Hss Drill Bit 9/64in 135 Split Point

Product Description

The DISSTON COMPANY 197544 is a cobalt-enhanced high speed steel (HSS) drill bit designed for drilling into hard and abrasion-resistant metals. Built to jobber length with a straight shank, this 9/64-inch bit measures 2-7/8 inches in length and features an 8 percent cobalt content that enables sustained cutting efficiency at temperatures exceeding 1,000 degrees F. The 135-degree split point geometry incorporates four cutting edges for aggressive material penetration and eliminates bit walking on contact, reducing the need for a center punch. This bit is suited for use by machinists, pipefitters, and maintenance technicians working in metal fabrication or field service environments.

The 197544 is intended for drilling in hard metals where standard HSS bits fall short. Recommended applications include heat-treated steel, stainless steel, chrome alloys, manganese steel, titanium, and armor plate. The cobalt composition sustains hardness under high-heat conditions generated by cutting dense or work-hardening materials, making it a practical choice for production drilling or difficult one-off penetrations in demanding trade environments.

Key Features

• 8 percent cobalt content for heat resistance and cutting efficiency above 1,000 degrees F
• 135-degree split point with four cutting edges for fast penetration and no walking
• High speed steel base construction for durability in hard-metal applications
• Jobber length at 2-7/8 inches with straight shank for standard chuck compatibility
• Suitable for stainless steel, titanium, manganese steel, chrome alloys, and armor plate

Compatibility

Designed as a jobber-length straight-shank drill bit compatible with standard 3-jaw drill chucks found on corded and cordless drills, drill presses, and magnetic base drills used in metalworking and trade applications.

Installation Notes

This bit is installed by a machinist, pipefitter, or maintenance technician using a standard drill chuck. Secure the straight shank firmly before operation and verify chuck key is removed prior to powering the tool. Use appropriate cutting fluid or lubricant when drilling stainless steel or titanium to extend bit life and manage heat buildup. Wear appropriate personal protective equipment including eye protection whenever drilling metal.