Tap FANAR NARZYNKA UNF 7/16-20 DIN-22568 (2A) HSS 800

FANAR NARZYNKA UNF 7/16-20 DIN-22568 (2A) HSS 800 is a machine screw tap designed to cut internal UNF threads with a 7/16-20 pitch. Manufactured to DIN-22568 standards with a 2A tolerance class, this tap is produced from HSS 800 high-speed steel to provide wear resistance and maintain cutting geometry under typical workshop and production use. It is intended for use in metalworking and mechanical assembly where accurate UNF 7/16-20 threads are required.

Advantages

The HSS 800 material offers improved hardness and heat resistance compared with standard carbon steels, helping the tap retain sharpness during repeated operations. Conformance to DIN-22568 ensures dimensional accuracy and compatibility with standardized thread gauges and mating parts. The 2A tolerance class provides reliable fit and interchangeability for machine screw assemblies. The tool's geometry and material selection support consistent chip formation and reduced wear in common ferrous and non-ferrous materials.

Suitable for

• Cutting internal UNF 7/16-20 threads in metals
• Mechanical assembly and repair work requiring standardized UNF threads
• Production and maintenance environments where DIN-22568 taps are specified

Key specifications

• Thread form: UNF (Unified Fine)
• Thread size and pitch: 7/16-20
• Standard: DIN-22568
• Tolerance class: 2A
• Material: HSS 800 high-speed steel
• Use case: machine screw tap for internal threads

How to use

Select a properly sized drill for the tap drill hole according to standard tap drill charts for UNF 7/16-20. Secure the workpiece and ensure correct alignment of the tap to the hole axis before starting. Use appropriate cutting fluid and apply steady, controlled rotational feed while cutting; reverse periodically to break chips if using a hand tap or when machining deep holes. Follow standard safety practices, including protecting hands and eyes and securing loose clothing.

Usage recommendations

For best results, match the tap to the correct drill diameter for UNF 7/16-20, use suitable cutting fluid for the workpiece material, and choose proper tapping speed. Inspect tapped threads with gauges or mating fasteners to verify conformity to DIN-22568 and 2A tolerance. Replace the tap when wear or damage affects thread quality.