Hand Tap Set Art-Pol M4 — 3 pieces (MPN 46010)

Hand tap set Art-Pol M4 — 3 pieces is a manual threading kit designed to create or repair internal metric threads sized M4. Manufactured by Art-Pol, the set contains three sequentially stepped taps that allow progressive cutting and finishing of M4 threads in materials suitable for hand taps, such as mild steel, aluminum, brass and various plastics. The compact set is intended for workshop maintenance, repair jobs and do-it-yourself tasks where accurate restoration or formation of internal M4 threads is required.

Advantages

The set provides a complete three-step tapping sequence in a single package, enabling efficient pre-cutting, intermediate sizing and final finishing of M4 internal threads without needing to source individual taps. The tools are sized for manual use, offering good control when tapping by hand and reducing the risk of cross-threading when used with proper technique. The compact set is convenient to store and transport for on-site repairs or mobile maintenance work.

Suitable for

• Creating new M4 internal threads in repair and fabrication tasks
• Restoring damaged or worn M4 threads in metal, plastic or composite parts
• Maintenance and service work on mechanical assemblies requiring M4 fasteners
• Hobbyist and DIY projects that involve fastening with M4 screws

Key specifications

• Thread size: M4 (metric)
• Set composition: three hand taps for sequential tapping stages
• Intended operation: manual hand tapping
• Typical compatible materials: mild steel, aluminum, brass, plastics
• Form factor: compact three-piece set suitable for portable use

How to use

Select an appropriate drill size for the M4 tap and prepare a straight, clean hole. Secure the workpiece and apply light cutting oil if tapping metal to reduce friction and improve chip evacuation. Start with the first (taper) tap, aligning it square to the hole and turning it clockwise a few turns, then back off to break chips. Progress to the intermediate tap and finally the finishing tap, maintaining alignment and using the same back-off technique to prevent jamming. Clean chips from the hole between passes and verify thread fit with an M4 screw.

Usage recommendations

Use steady, controlled pressure and proper tap wrenches for manual tapping; apply cutting fluid for metallic materials and avoid forcing the tap in hardened or unsuitable materials. Inspect taps for wear before use and replace if cutting performance or thread quality degrades.