Thread Repair Services
Pear Tree Engineering
Broken bolts and studs
Glow plugs and Injectors
Repair damaged internal threads
Mobile service available
Sale of repair
kits and inserts
We can repair the following types of threads on
Fine, Medium and Coarse, UNC, UNF, BSP, BSW, BSF, it is also
possible to reclaim some left hand threads.
We carry an extensive range of threaded inserts, both wire
(Helicoil) type and Time-Serts.
If a thread has been previously
repaired, as long as there is enough material around the problem
area, it can be repaired using
big-serts to get the thread to its original specification, eg,
on pulled Helicoils, worn or over drilled holes.
We use Recoil, Helicoil and
Timesert products for our thread repairs as they are all made to
very high specifications,
We can carry out the repair on site
at the customer's premises,
or in our workshop on items sent to us.
Often we can repair
the damaged thread in situ without stripping to provide
a fast and cost effective service,
resulting in minimum downtime and inconvenience. We can
usually remove sheared and damaged bolts and studs
as part of our service and are now offering a locking
wheel nut removal service where the key has been lost or
the wheel nut damaged, also removal of studs etc with
broken extractors or studs that are too hard to drill by
With experience in the
motor trade since 1962, we have come across numerous
instances of broken bolts, studs, drills and taps,
together with stripped internal and external threads,
which we have successfully repaired with the use of
Broken drills, taps and studs
with broken extractors in them can
ONLY be removed by spark eroding.
Our mechanics are fully trained in
the use of portable spark eroding equipment
to remove broken taps, drills and studs and in the fitting of
to reclaim stripped internal threads.