Hand Tap Set Art-Pol M18 x 2.50 mm, 3-piece (thread taps)

Art-Pol hand tap set M18 x 2.50 mm is a three-piece kit designed for cutting internal metric threads with a 2.50 mm pitch. The set contains progressive tap sizes intended to create or restore M18x2.50 threads by hand in a range of materials such as steel, aluminium alloys and engineering plastics. It is intended for manual threading tasks in maintenance, repair and small-scale fabrication where a consistent M18 internal thread is required.

Advantages

The three-piece configuration provides a stepped approach to cutting threads, reducing load on each tap and improving accuracy compared with using a single aggressive tap. Hardened and ground cutting edges deliver consistent thread geometry and wear resistance appropriate for hand operation. Compact format and straightforward sizing make the set suitable for use with standard tap wrenches and in confined spaces where controlled manual threading is needed.

Suitable for

• Repair and maintenance of machinery and equipment requiring M18 x 2.50 internal threads
• Manual threading in metalworking and fabrication shops
• Creating or restoring threads in aluminium, steel and engineering plastics
• Field service, on-site repairs and mechanical assemblies

Key specifications

• Thread size: M18 x 2.50 mm (metric)
• Pack configuration: 3-piece hand tap set with progressive tap sizes for step-wise cutting
• Application: cutting internal (female) threads by hand
• Compatible materials: metals (mild steel, alloy aluminium) and engineering plastics
• Operation method: manual tap wrench or T-handle

How to use

Select the appropriate starter tap from the set and align it carefully with the prepared hole. Use a tap wrench or T-handle to turn the tap clockwise to cut the thread, applying steady, even pressure. Back the tap out periodically (typically a half to full turn) to break and clear chips, then continue until the tap passes through the full depth. Progress to the medium and then the finishing tap to achieve the final thread form and size. Use cutting fluid when working with metals to reduce friction and improve surface finish; for plastics use minimal pressure and slow, steady rotation to avoid material deformation.

Usage recommendations

Ensure the hole diameter matches the recommended drill size for M18 x 2.50 internal threads before tapping. Maintain alignment and use appropriate cutting fluid for metalworking. Clean chips from the hole frequently and inspect threads after finishing to confirm fit and function.