Single Point Tools Model 39 & 40 — High-Speed Steel Lathe Cutting Tools

These Single Point Tools, available in Models 39 and 40, are precision-ground high-speed steel cutting tools designed for marine workshop lathes and manual machining operations. Their heat-treated construction ensures a hard, durable cutting edge that maintains sharpness even during extended use on tough alloys.

Ideal for shipboard maintenance and repair work, these single point tools are compatible with standard tool holders and provide clean, accurate cuts on steel, stainless steel, and non-ferrous metals. Whether you are turning shafts, boring engine components, or performing general machining tasks, Model 39 and Model 40 deliver reliable performance in demanding marine environments.

Key Features

Technical Specifications

ModelShank SizeLengthMaterialHardnessCutting Edge AngleApplication
Model 391/4 inch (6.35 mm) square3 inches (76 mm)High-Speed Steel62-65 HRC60°General turning, finishing
Model 403/8 inch (9.53 mm) square4 inches (102 mm)High-Speed Steel62-65 HRC60°Heavy turning, roughing

Frequently Asked Questions

What materials can I machine with these single point tools?

These tools are ideal for cutting carbon steel, alloy steel, stainless steel, brass, bronze, and aluminum. For best results, ensure appropriate cutting speed and feed rates.

What is the difference between Model 39 and Model 40?

The two models differ in shank size. Model 39 has a 1/4-inch shank, while Model 40 has a 3/8-inch shank. Choose based on your lathe tool holder size and required depth of cut.

Can these tools be reground?

Yes, high-speed steel tools are typically regrindable. Reshape the cutting edge on a bench grinder to suit your specific machining needs.

Are the tools corrosion resistant for marine use?

Plain HSS is not corrosion-proof, but these tools are oiled to resist rust and are suitable for marine workshops. Always wipe and apply light oil after use to prevent corrosion.

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