SPRING 2022

182
THE DISTRIBUTOR’S LINK
BRUNO MARBACHER DRIVING SYSTEMS FOR FASTENERS – TAMPERPROOF DRIVES from page 164
T-Groove Tamper Proof Bolts (3 Grooves)
T-Groove® Security Bolts are
available for screws and nuts,
they are an excellent alternative
to other types of tamper proof
bolts. The Tri-Groove tamper
resistant fastener drive style
also known under the name Tri-Groove, T Groove, Trident
Drive and Coned Trident Drive. Security nuts are installed
using a special Tri Groove socket, which grips the
indentations along the outside of the fastener to turn the
nut along a thread. Tri Groove nuts can only be fastened
with Tri Groove Driver sockets. Socket can be purchased
online making this tamperproof screw less effective.
Security Wave Bolts (Waved Groove)
A Security Wave Bolt is
a highly secure tamper proof
bolt. These tamper proof bolts
can be either supplied with
either a two-way reusable or
one-way permanent security
drive. The unique rounded
design incorporates varying angles and radiuses to
resist against grips such as pliers – making it ideal for
applications where the highest level of security is crucial.
Also available with security wave nuts.
Security wave bolts require a special driver tool which
can be stamped and registered with a customer-specific
reference number – allowing the tool to be tracked to
manufacturers and installers who have purchased the
screws. Manufacturer statement: Under no circumstances
will the tools be sold to ‘non-account’ customers.
Tampering is extremely difficult, counter sinking it will add
another degree of difficulty.
Scroll Nut And Bolts
Scroll Nuts and Scroll Bolts
offer a clever solution for those
situations where you need an
anti-tamper fastener, that can
also be taken apart as the
need arises. The Scroll Nut
or Scroll Bolt is installed and
removed with the help of a special driver. The special
grooves cut into the outer surface of the scroll nut, allows
the nut to be tightened or released. The scroll nut/bolt
can also be made with just a drive groove, converting this
fastener into a one-way bolt or nut. They are also called
Slot-Lok. Again, countersinking the screws increases
tamperproof resistance.
Tamper Proof Locking Lug Nut
Newer vehicles come with
a security lug nut on each
wheel. Sometimes people that
get custom or aftermarket rims
put them on as well. They are
like regular lug nuts but have a
cut out in them and need a key
to be removed. They are used
to deter criminals from stealing
your wheels. The key usually
comes in a set which can be found with the spare tire
or sometimes in the glove box. If the key is lost or gets
broken, the dealer or manufacturer can make a new one.
Tork-Bolts (Break-Away Bolts)
Tork Bolts offer superior
theft resistance. Break-Away
Bolts, Break-off bolts also
known as Shear Bolts can be
installed with a conventional
wrench or socket, They provide
protection against theft, tampering, etc. The hex portion
breaks free from the screw or bolt. The bolt/screw is
properly and permanently installed.
Countersinking the head makes it almost impossible
to tamper. Breakaway Bolts are available in flat head
(countersunk) and button head.
Conclusion
We covered simple to very complex tamperproof screws,
there are additional tamperproof screws available, they
typical only differ slightly from the ones mentioned above.
No tamperproof screw is a 100 % secure, a determined,
creative, “skilled” individual may find a way to remove the
screws.
BRUNO MARBACHER