Hertel 66693722 Cobalt Drill Bit Set 26 Pc Letter A-z

Product Description

The HERTEL 66693722 is a 26-piece cobalt jobber length drill bit set covering the full letter series from A through Z. Each bit is manufactured from cobalt high-speed steel, which provides superior heat and wear resistance compared to standard HSS, making the set well suited for drilling into hard metals, stainless steel, cast iron, and other demanding materials. The 135-degree split-point tip reduces walking on contact, enabling faster penetration without a center punch on most metal surfaces. All 26 bits feature a straight shank and a bright uncoated finish. The set is intended for licensed machinists, maintenance technicians, and heavy-duty metalworking applications.

This set is sized for metalworking and multipurpose drilling tasks in both shop and field environments. The full A-through-Z letter series covers fractional-adjacent diameters commonly required for tapping and reaming operations in industrial maintenance, fabrication, and production settings. The included storage case keeps bits organized and protected between uses, supporting efficient workflow on the job site or at the bench.

Key Features

• Cobalt high-speed steel construction for heat resistance in hard-metal drilling
• 135-degree standard split point reduces bit walking and improves penetration speed
• Full letter series A through Z - 26 bits in one set
• Straight shank compatible with standard drill chucks
• Bright uncoated finish - no coating to chip or peel under heavy use
• Includes metal or plastic storage case for organization and transport

Compatibility

Designed for use in standard drill presses, hand drills, and mill-drill machines accepting straight shank bits. Sized in the inch measurement system for metalworking and multipurpose drilling applications.

Installation Notes

Installation of drill bits should be performed by qualified machinists or maintenance technicians familiar with rotating tool safety. Always ensure the drill chuck is fully tightened and the workpiece is securely clamped before operation. Disconnect or de-energize the drill press or driving tool before changing bits. Follow applicable OSHA and facility safety standards when operating drilling equipment at speed.