Top-Hat Thread Repair

These things are amazing. You can rescue very expensive engine parts with the correct top-hat sleeve and good technique.

Qnkaa 151pcs Thread Repair Kit Helicoil Insert Sleeves Metric M5 M6 M8 M10 M12 Stainless Steel Tap Drill
Qnkaa 151pcs Thread Repair Kit Helicoil Insert Sleeves Metric M5 M6 M8 M10 M12 Stainless Steel Tap Drill
5.0
£29.50
BUY NOW
Amazon.co.uk
TIME-SERT M6x1.0x9.4mm Insert QTY 10 p/n 16101
TIME-SERT M6x1.0x9.4mm Insert QTY 10 p/n 16101
5.0
£25.10
BUY NOW
Amazon.co.uk
200 Pcs Helicoil Thread Repair Kit, M3-M8 Metric Thread Adapters, Reducing Nut & Sleeve Set
200 Pcs Helicoil Thread Repair Kit, M3-M8 Metric Thread Adapters, Reducing Nut & Sleeve Set
4.0
£6.59
BUY NOW
Amazon.co.uk
Amazon price updated: 2025-07-10 23:49

Use to...

• Repair a crossed thread.

• Replace a stripped thread.

Buying Tips

• Pay attention to thread pitch as well as diameter.

• Consider a kit with a matching drill bit.

• Some kits come with an insertion tool.

Safety Tips

• Always wear eye-protection

• Consider impact-protection