Threading Die FANAR Narzynka M4 N1-121001-0040 — for cutting M4 metric threads

FANAR Narzynka M4 (single threading die) is designed to cut external metric M4 threads on rods, bolts and similar cylindrical parts. Manufactured for repair, maintenance and small-scale production tasks, this die provides the correct pitch and thread profile for standard M4 applications when used with a compatible die stock or holder. It is suitable for both manual and machine-assisted threading operations, offering consistent results on steel and common ferrous materials when used according to recommended speeds and lubrication.

Advantages

The FANAR Narzynka M4 delivers accurate thread geometry and repeatable results thanks to precision ground cutting edges. Its compact, single-die form factor is convenient for quick on-site repairs or workshop tasks. Built to standard metric tolerances, the die ensures compatibility with standard M4 nuts and mating parts. When used with proper cutting fluid and a matched holder, it reduces the risk of thread deformation and improves surface finish.

Suitable for

• Cutting external M4 metric threads on rods and bolts
• Repair and maintenance of threaded components
• Small-scale production and prototype work
• Manual threading with a die stock or machine threading with a suitable holder

Key specifications

• Thread size: M4 (metric)
• Function: external threading die for cutting standard M4 threads
• Form: single die (round, solid style for use in die stock or holder)
• Compatible materials: steel and common ferrous materials (use appropriate cutting fluid for other metals)
• Application: manual and machine-assisted external thread cutting

How to use

Secure the die in a suitable die stock or holder, align it square to the workpiece and start the cut with steady, even pressure. Apply appropriate cutting fluid to the workpiece and die to reduce friction and extend tool life. Advance the die one turn forward and back off a quarter turn periodically to clear chips. For machine-assisted use, follow the machine’s speed and feed recommendations for M4 threading in the chosen material to avoid overheating or excessive wear.

Usage recommendations

Use a matched die stock or holder and appropriate cutting fluid. Inspect the workpiece for burrs and ensure the rod end is chamfered slightly to help start the die. For hardened or non-ferrous materials, verify compatibility and select correct lubrication and machine settings.