Hertel 62194972 Cobalt Drill Bit No 10 135 Split Point

Product Description

The HERTEL 62194972 is a cobalt threaded shank drill bit designed for drilling into high-tensile strength materials where standard high-speed steel bits fall short. It carries a No. 10 wire size designation, equating to 0.1935 inches in diameter, and features a 135-degree split point that reduces walking on entry and lowers the thrust needed to start a hole. The oxide coating adds a measure of surface hardness and corrosion resistance. Overall length is 2.125 inches with a 1.125-inch spiral flute length. The 1/4-28 threaded shank is sized for compatible quick-change or precision drill chucks used in production and maintenance environments.

This bit is built for right-hand cutting in stainless steel, alloy steel, titanium, and other high-tensile materials common in aerospace, industrial maintenance, and mechanical contracting work. The tapered web with web-thinning reduces cutting resistance without sacrificing bit strength. It conforms to NAS 965 specification, making it appropriate for applications where material traceability and dimensional compliance are required. Trades working with structural fastener holes, close-tolerance bores, or hardened metal substrates will find this a practical single-piece unit.

Key Features

• No. 10 wire size — 0.1935 inches diameter for precision bore sizing
• 135-degree split point reduces drill walk and lowers entry thrust
• Cobalt construction with oxide coating for high-tensile material cutting
• 1/4-28 threaded shank for compatible chuck systems
• Web-thinned tapered web reduces cutting torque
• NAS 965 specification compliance for traceability-sensitive applications

Compatibility

Designed for use with 1/4-28 threaded shank drill chucks and quick-change systems that accept this shank standard. Suitable for drilling high-tensile strength metals including stainless steel, alloy steel, and titanium.

Installation Notes

This bit is installed by a machinist, maintenance technician, or mechanical trade professional using a compatible 1/4-28 threaded chuck. Secure the threaded shank fully before operation to prevent runout or shank damage. Use appropriate cutting fluid or coolant when drilling high-tensile materials to extend bit life and maintain hole quality. Inspect the cutting edges before each use and replace the bit if chipping or dulling is observed.