1Three thread standards
Taps and die nuts in UNC, UNF and metric sizes handle both US and metric fasteners.
- Home
- Products
- Maker & DIY
- Tools
- 42-piece thread restorer kit
Bring damaged threads back-12%CODEcapitalone12Harfington 42-piece thread restorer kit
A 42-piece kit for cleaning up damaged threads on bolts, nuts and holes. UNC, UNF and metric sizes plus thread files sit in one case.
12%$51.53
Price with code · Harfington · as of 2026-10-09Code capitalone12 · 12% off
2Thread files included
Where a nut will not fit, the thread files clean up the threads. A handle for turning the taps is included.
3Made for repair work
The page aims it at restoring threads such as car engine oil holes and machinery tapped holes.
Key specs
- Pieces
- 42
- Standards
- UNC · UNF · metric
- Extras
- Thread files, tap handle
- Storage
- Hard case
Good pick if
- You service cars or machinery yourself
- You often run into rusty, damaged bolts
Think twice if
- You need to cut new threads from scratch (it restores threads)
FAQ
Is there a promo code?
Yes. Enter capitalone12 at Harfington checkout when buying the Harfington 42-piece thread restorer kit for 12% off.
Does it fit inch bolts?
Yes. UNC and UNF inch sizes come alongside the metric ones.
Can I return it?
The product page offers 30-day returns from delivery. Returns are free within the US; elsewhere you pay the return shipping.
Related products
Tools
-20%CODESD20
-20%CODESD20
-15%CODEFS
-12%CODEcapitalone12
-15%CODEWC15
-15%CODEBB15