Tap (left-hand) FANAR NARZYNKA M12x1.25 DIN-22568 LH HSS 800 – metric M12 x 1.25 thread

FANAR NARZYNKA M12x1.25 DIN-22568 LH HSS 800 is a left-hand machine tap designed for cutting internal metric threads M12 x 1.25 to DIN-22568 standard. Manufactured from high-speed steel (HSS 800), this tap is suitable for use in tapping machines or in handholders for workshop and production environments where left-hand threading is required. The tool is intended for cutting precise internal threads in various metals following dimensional and tolerance requirements of the DIN-22568 specification.

Advantages

The HSS 800 material offers a combination of toughness and wear resistance appropriate for general machining of ferrous and non-ferrous metals. The left-hand (LH) geometry enables production of reverse threads or use in assemblies that require counter-rotating thread forms. Conformance to DIN-22568 ensures consistent thread form and tolerances, making the tap suitable for repetitive production work and repair operations. The design supports use both in machine tapping spindles and in suitable handholders, providing flexibility across workshop applications.

Suitable for

• Cutting internal metric threads M12 x 1.25 in steel and similar metals
• Production environments requiring left-hand threads
• Workshop repair and maintenance tasks on assemblies with reverse-threaded fasteners
• Use in tapping machines, tapping heads, or appropriate handholders

When it may not be suitable

This tap is intended for machining metal and may not be appropriate for soft materials like plastics or highly abrasive composites without verifying chip evacuation and tool life. It is a left-hand thread tool, so it will not be suitable for applications that require standard right-hand threads. For very hard materials or high-production conditions requiring extended tool life, specialized coatings or carbide tools may be preferable.

Key specifications

• Thread form and pitch: metric M12 x 1.25
• Thread hand: left-hand
• Standard: DIN-22568 (machine tap thread form and tolerances)
• Material: high-speed steel (HSS 800)
• Intended use: internal threading with machine or handholder

How to use

Select a suitable tapping machine or handholder and secure the workpiece to prevent movement. Ensure the hole is pre-drilled to the correct nominal clearance for M12 x 1.25 according to standard drilling charts. Apply appropriate cutting fluid for the work material to improve chip evacuation and tool life. Run the tap at appropriate spindle speed and feed for HSS tools and the material being machined; when using the tap by hand, advance steadily and reverse periodically to break chips. Clean chips from the flutes regularly and inspect the thread and tool for wear. Follow machine and safety guidelines during operation.

What to consider before purchase

• Confirm that a left-hand M12 x 1.25 thread is required for your assembly
• Verify the workpiece material and whether HSS 800 is suitable or a coated/carbide tap is needed
• Ensure correct pre-drill diameter and compatibility with your tapping machine or handholder
• Consider required production volume and potential need for spare taps for uninterrupted work

Usage recommendations

Use appropriate cutting fluid, maintain recommended spindle speeds for HSS tools, and reverse the tap periodically to break chips. Inspect the tap regularly for wear and replace when thread quality degrades to maintain consistent results.