C6L Installation Sequence
1
2
3
4
HOW IS THE C6L HUCK LOCKBOLT
INSTALLED?
1. The pin is inserted into the prepared hole
and the smooth bore, free fitting collar is
placed on the pin.
2. The installation tool is applied to the
pintail. When the tool is activated, the jaws
in the nose assembly pull on the pintail
and the nose anvil pushes on the collar to
remove any gap.
C6L cross section
reduce labour cost due to their easy and
quick installation (no skilled labour required).
3. The nose anvil starts to swage the collar
into the lock grooves on the pin. Continued
swaging causes the collar to lengthen and
develop clamp.
6. HuckBolts have an ability to
accommodate flexing in a structure without
working loose. If a pin is used with a wide
flanged collar it helps to spread the load
ensuring structural integrity.
4. When swaging of the collar into the lock
grooves is complete, the pintail breaks
off, the tool is ejected off the fastener and
completes the installation sequence.
7. Huck Lockbolts have the benefit of
consistent installation which eliminates
future maintenance requirements and
ultimately provides cost reductions. The
high-fatigue, annular lock groove form
extends the life of the structure
WHY USE A C6L PIN AND COLLAR
LOCKBOLT OPPOSED TO A
TRADITIONAL NUT AND BOLT?
1. HuckBolts (Lockbolts) have been designed
to provide vibration resistant joining
solutions for industrial applications – they
do not rely on pre-installed nylon patches,
lock wires, washers or any other additional
methods that might affect their integrity.
2. Even in the most vibration-intensive
environments, Huck fasteners maintain their
structural integrity for the life of the joint.
Traditional fasteners loosen under vibration.
No matter how hard they are tightened, nuts
and bolts will loosen with time if they are
subjected to regular mechanical vibrations.
3. HuckBolts are installed using direct
tension and swaging. This installation
method helps ensure there are no gaps as
there are between nut and bolt threads – a
common potential source of loosening.
HuckBolts feature full metal-to-metal contact
between the swaged collar and the pin.
This unique swaged connection provides
unwavering vibration resistance, even in the
harshest vibration filled applications.
4. Because HuckBolts are not subjected to
torsion during installation, they can safely
be taken to higher preload values than
conventional bolts. This results in higher
clamp, higher strength and ultimately the
highest level of vibration resistance you can
find.
5. Huck Lockbolts are often preferred over
traditional bolts because they offer a more
efficient fastening method. They help to
8. Initial long length of fastener (pin) enables
pull-out of large gaps and high retained
clamp.
Specialists in the supply and distribution of
Huck Fasteners, Star Fasteners are proud to
be the UK’s largest Huck stockists. Working
globally with a diverse range of end users
and distributors from across a number of
industries, offering technical application
knowledge, customer support, and tooling
sales, service and repair.
For more information about Huck fasteners
and Star Fasteners unique value-added
services have a look on starfasteners.co.uk
or contact us on the following: - Tel: +44
(0)115 9324939 email: sales@starfasteners.
co.uk www.starfasteners.co.uk
For further information, please visit www.starfasteners.co.uk
Issue 44 PECM
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