Hertel S-07575020 Screw Machine Drill Bit Set 115 Pc

Product Description

The HERTEL S-07575020 is a 115-piece screw machine length drill bit set built from high-speed steel (HSS) with an oxide finish. Screw machine length drills are shorter than jobber-length bits, which gives them greater rigidity and reduced deflection when drilling in metal. The 135-degree split-point tip eliminates the need for a center punch and bites immediately on contact. The straight shank works with standard drill chucks. This set is sized for metalworking and general-purpose applications where accuracy and bit life are priorities. Machinists, maintenance techs, and toolroom professionals will find this set covers the full standard range in a single kit.

This set is designed for metalworking and multipurpose drilling in industrial, maintenance, and shop environments. It covers wire gauge sizes from number 60 to number 1 and letter sizes from A through Z, giving technicians access to nearly every common hole size up to 1/2 inch without switching to a separate set. The metal storage case keeps bits organized and protected between uses. It is suited for use on drill presses, lathes, milling machines, and hand-held drills where screw machine length geometry is preferred.

Key Features

• 135-degree split-point tip starts on contact without center-punching and reduces walking on hard surfaces
• High-speed steel construction with oxide finish for heat resistance and extended bit life in metal
• Screw machine length geometry provides added rigidity and reduced deflection compared to jobber-length bits
• Covers wire sizes number 60 to number 1, letter sizes A through Z, and fractional sizes from 1/16 inch up to 1/2 inch in 1/64-inch step increments
• Straight shank compatible with standard drill chucks across all common drill platforms
• Metal storage case included for organized storage and transport of all 115 pieces

Compatibility

Designed for use in standard drill chucks on drill presses, lathes, milling machines, and hand drills that accept straight-shank bits sized up to 1/2 inch capacity.

Installation Notes

Installation of drill bits should be performed by qualified machinists or maintenance technicians familiar with rotating cutting tools. Ensure the drill chuck is fully tightened and the workpiece is securely clamped before beginning any drilling operation. Always wear appropriate eye protection and follow applicable shop safety procedures. Inspect each bit for cracks or chips before use and replace any damaged bit immediately.