This listing is for a 7/16 UNC Helicoil Thread Repair Kit. 

Ian Evans 07971 551927. www.evansandsonrallyspares.co.uk

The range of thread repair kits, commonly known as helicoils has two functions:-
  • To repair a stripped threaded hole - such a repair may be effective in most materials including castings.
  • To provide a hard wearing thread in a component which may often be disassembled - tapped holes in aluminium machined parts or castings being obvoius examples.

The repair involves drilling out the product to the next up tapping size, tapping the thread, then inserting the threaded insert to reduce down to the original tapped size - but now with a wear resistant insert.

As with all hand tools you get what you pay for - this range of thread repair kits & inserts are the best available.  The thread repair kits include drill, tap, insertion tool & tang removal tool plus a good quality of inserts.  Additional insert packs are available at extra cost, please enquire ?