Silverline Thread Repair Kit Helicoil Inserts M12 1.75mm 488570

Silverline Thread Repair Kit Helicoil Inserts M12 1.75mm 488570

MPN: 488570

Size: M12 x 1.75mm

Barcode: 5024763030956

Overview:

M12 - 1.75mm Thread Repair Kit Helicoil Inserts (488570) Full Kit designed for restoring damaged or stripped female threads in metal components. Ideal for mechanical repairs and maintenance, it allows you to repair an existing M12 x 1.75 thread in materials such as steel, cast iron and aluminium. The sprung insert coils form a strong, wear-resistant internal thread, often providing a tougher thread than the original base metal. Supplied as a complete kit in a sturdy metal storage case, it includes the essential tools needed to drill, tap and install the inserts for a reliable, professional repair.

Key Features

• Repairs stripped or worn female M12 x 1.75 threads

• Suitable for use in steel, cast iron and aluminium components

• Spring coil inserts create a durable, strong replacement thread

• Complete kit includes drill, tap, insertion tool and tang remover

• Ideal for automotive, machinery and general workshop repairs

• Supplied in a metal case for tidy storage and easy transport

Specifications

• Brand: Silverline

• Product Type: Thread repair kit / helicoil insert kit

• MPN: 488570

• Barcode: 5024763030956

• Thread Size: M12 x 1.75mm

• Suitable Materials: Steel, cast iron, aluminium

Kit Contents

• HSS tap

• Twist drill

• Coil driver / insertion tool

• Tang remover / break-off tool

• M12 x 1.75 inserts

• Metal storage case

Applications

• Repairing stripped threads in engine parts, brackets and housings

• Restoring threads in machinery and mechanical assemblies

• Extending the life of castings and aluminium components

• Workshop maintenance and general engineering repairs

How to Use

• Drill out the damaged thread using the supplied twist drill

• Tap the new thread with the included HSS tap

• Install the insert using the driver tool to the correct depth

• Remove/break off the tang using the tang remover tool

• Refit the bolt and tighten as required for the repaired thread

Helicoil Thread Repair Kit M12 x 1.75mm 488570 – Key FAQs

• What is a helicoil thread repair kit used for?
  It’s used to restore stripped or damaged female threads in metal, allowing you to re-use the original bolt size after installing a strong spring coil insert.

• What materials can this kit be used on?
  It’s suitable for repairing threads in steel, cast iron and aluminium, making it useful for automotive, machinery and general workshop repairs.

• Does the kit include all the tools needed?
  Yes. It includes the drill, HSS tap, insertion tool and tang remover, along with M12 x 1.75 inserts, all supplied in a metal case.

• Is the repaired thread strong enough for repeated use?
  Yes. The sprung insert forms a durable internal thread, and in many cases it can provide a stronger, more wear-resistant thread than the original base metal.

• What does M12 x 1.75 mean?
  M12 is the bolt diameter (12mm) and 1.75mm is the thread pitch. This kit is designed specifically to restore that thread size.

• Do I need to remove the tang after installing the insert?
  Yes. After the insert is installed, the tang is removed/broken off using the included tool so the bolt can pass through and seat properly.

See the full range of Helicoil Thread Inserts and Tools