RUKO ProCoil Thread Repair Set M3 x 0.5 H

When a threaded hole in aluminium, steel or plastic is stripped or worn, the ProCoil M3 x 0.5 H set restores it to full strength on the spot. The kit equips workshops and maintenance crews with a coordinated HSS drill, tap, installation tool and tang break tool, so a damaged M3 thread can be brought back to service without replacing the component.

Key specifications

• Thread size: M3, pitch 0.5 mm, metric standard
• Insert material: stainless steel AISI 304
• Insert length: 1.5D (4.5 mm), 20 pieces included
• Drill bit diameter: 3.1 mm, HSS
• Tap: ST M3 x 0.5, HSS
• Tools: HSS twist drill, HSS tap, installation tool, tang break tool
• Packaging: durable plastic case

Why choose it

Helical wire inserts create a stronger thread than the original tapped hole, with high corrosion resistance and temperature resistance up to 425 °C. The coordinated tool set removes guesswork, and the stainless steel inserts suit repair in metal, plastic and wood.

Ideal use cases

• Repairing stripped M3 threads in engine components, housings and fixtures
• Restoring threads in aluminium, magnesium and other soft metals
• On-site maintenance in automotive, machinery and general engineering

Good to know

The set is supplied in a durable plastic case for organised storage. All tools are made of high speed steel for reliable cutting performance.