1. business and industrial
2. iron and steel industry

HuckLok®
®
HuckLok
Structural Blind
Fastening System
Double-locking, wide-grip fasteners
2
HuckLok®
Wide Grip Range
A 6.4mm grip range in each of
the fastener grip sizes allows the
HuckLok to join assemblies that are
2.0mm to 31.8mm thick.*
Unique Double-Lock Design
A double-locking system that
makes every connection doubly
secure. HuckLok actually locks
the assembly from both sides,
for incomparable performance
and reliability.
Fast, Foolproof Installations
With HuckLok blind fasteners,
high quality installations do not
depend upon the skill of the worker.
They install in seconds, cleanly and
precisely, and require no more than
a glance to confirm an accurate
installation. When the pin is flush the
HuckLok has been properly installed.
Dimensional Data
Diameter (mm) Part Number
4.8
Grip range (mm)
Hole Size (mm)
Nominal A (mm)
Max B (mm)
Max C (mm)
Max D (mm)
1.6 - 7.9
4.9 - 5.1
4.8
9.9
2.6
22.9
†
HKLP-R6-5U
6.4
HKLP-R8-6
2.0 - 9.5
6.6 - 6.9
6.4
11.9
3
28.3
6.4
HKLP-R8-7
4.8 - 11.1
6.6 - 6.9
6.4
11.9
3
29.9
6.4
HKLP-R8-8.5
7.1 - 13.5
6.6 - 6.9
6.4
11.9
3
30.9
6.4
HKLP-R8-10
9.5 - 15.9
6.6 - 6.9
6.4
11.9
3
34.7
6.4
HKLP-R8-12
12.7 - 19.1
6.6 - 6.9
6.4
11.9
3
37.9
6.4
HKLP-R8-14
15.9 - 22.2
6.6 - 6.9
6.4
11.9
3
41.1
“D”
“C”
“B”
“A”
Installed Values (Minimum) N
Material and Finish
Nominal Grip
Coating Type Material
4.8mm
6.4mm
Shear
8452
15,569
Tensile
4448
8452
Standard
Coating
Pin Retention
677
1779
U suffix
*Not all diameter and grip size combinations available.
†
For grips below 2.5mm please use minimum hole size for best results.
2
Sleeve
Pin
Sleeve Finish
Pin Finish
Steel
Low Carbon
Steel
Medium Carbon
Steel
Zinc Plated
Clear Chromate
Zinc Plated
Clear Chromate
Steel
Low Carbon
Steel
Medium Carbon
Steel
Zinc Plated
Gold Chromate
Zinc Plated
Clear Chromate
HuckLok®
Blind-side bulb resists
pull-through
Breaking flush throughout
its grip range
Undercut fillet
allows seating in
burred holes
Lock groove on pin
engages shoulder on
fastener head, while
the extruded support
ring “double locks”
the pin within the bulb
Solid pin provides
exceptionally high strength
in the shear plane
Installation Sequence
1
Insert the HuckLok fastener into
the hole and slip the installation
tool over the pintail.
3
2
Press the trigger to initiate
pulling action. As the tool pulls
on the pintail, the shear ring
pushes the fastener sleeve
outward, forming a bulb that
compresses against and
tightens the application.
4a
During bulb formation, the shear
ring forms a support ring from
the fastener sleeve by creating
build-up of material above
the ring.
The shear ring breaks free
and is pressed onto the catch
grooves. The pulling action
continues until the internal
fastener shoulder engages
the lock groove on the pin
and forms an internal lock.
The pintail then breaks off,
completing the installation.
4b
Shown in maximum grip,
the shear ring breaks free and
settles into a catch groove
upon completion of the pulling
sequence. Double locking occurs
as the sleeve “back fills” behind
the shear ring while it travels
through the sleeve.
Huck® Installation Tools & Nose Assemblies for HuckLok Fasteners
Dia.
4.8
Nose Assembly Options
FOCUS Non-FOCUS
1
2
99-3300
99-3303
99-3303L
99-3304
Nose Assembly integral with Tool
6.4
99-3301
99-3305
99-3305L
99-3306
Nose Assembly integral with Tool
Pneumatic Tool Options
Non-FOCUS
2
3
4
2025
2025B
LH-224
2025
2025B
2025L
2025LV
2025
2025B
FOCUS
1
LH-224
202/202V
2025LB
LH-224
241E
LH-224
202/202V
2025LB
LH-224
241E
LH-224
2025
2025
2025L
2025
2025B
2025B
2025LV
2025B
5
2025V
2025V
2025V
Hydraulic Tool Options
FOCUS
Non-FOCUS
1
2
3
4
2480
2480
2480L
2480
2025V
2025V
2480
2480
2480L
2025V
2480
3
Huck® fastening systems – the benefits:
• High-speed, easy-to-install systems can reduce production time by 75%
• Strong, vibration resistant systems use less fasteners - saving weight and cost
• Maintenance free, quality long-life joints result in lower total costs - a guaranteed return on investment!
Alcoa Fastening Systems Commercial Products: A Global Organisation
Alcoa Fastening Systems (AFS) maintains a company office
in the United Kingdom, with offices in many other countries.
Authorised AFS fastener distributors are also located in many
International
Locations
Telford Operations
Unit C, Stafford Park 7,
Telford, Shropshire TF3, 3BQ
UNITED KINGDOM
Tel: 44 1952 290011
Fax: 44 1952 290459
Melbourne Operations
20 Stamford Road,
Oakleigh, Victoria, 3166
AUSTRALIA
Tel: 61 3 9567 3321
Fax: 61 3 9563 1980
of the world’s industrial centres, where they provide
a ready source of AFS fasteners, installation tools,
tool parts and application assistance.
Americas
Headquarters
8001 Imperial Drive,
Waco, TX 76712, USA
P.O. Box 8117
Waco, TX 76714-8117, USA
Tel: 800 388 4825
Fax: 800 798 4825
Indianapolis Distribution
5436 West 78th Street,
Indianapolis, IN 46268, USA
Tel: 800 732 3470 ext 1
Fax: 800 573 2645
Kingston Operations
1 Corporate Drive,
Shanghai Sales
Kingston, NY 12401, USA
No.1277, Zhongshan Xi Road,
Tel: 800 278 4825
Hailuo Building, Room 504,
Fax: 845 334 7333
Shanghai, 200051, CHINA
Tel: 86-21-62700949
Fax:
Unit86-21-62701964
10 Finepoint Business Latin
ParkAmerica Sales
Avenida
Parque Lira,
Kidderminster
79-402 Tacubaya,
Singapore
Sales
Worcestershire
DY11 7FB UK
MEXICO C P 11850
Blk 194 Pandan Loop,
Tel: 52 55 5515 1776
#07-16
Industrial
T: +44Pantech
(0) 1562
513910
Fax: 52 55 5277 7564
Complex 128383,
F: +44 (0) 1562 69666
SINGAPORE
E: sales@rivco.co.uk
Tel:
65 67 78 92 33
Fax:
67 78 01 51
W: 65
www.rivco.co.uk
Mississauga Distribution
6150 Kennedy Road,
Unit 10, Mississauga,
Ontario L5T-2J4
CANADA
Tel: 905 564 4825
Fax: 905 564 1963
Stoughton Operations
44 Campanelli Parkway,
Stoughton, MA 02072, USA
Tel: 800 732 3470 ext 2
Fax: 800 644 2177
Waco Operations
8001 Imperial Drive,
Waco, TX 76712, USA
P.O. Box 8117,
Waco, TX 76714-8117, USA
Tel: 800 388 4825
Fax: 800 798 4825
FM 13568/QS9000
EMS 60542
NOTICE: The information contained in this publication is only for general guidance
with regard to properties of the products shown and/or the means for selecting such
products, and is not intended to create any warranty, express, implied, or statutory;
all warranties are contained only in AFS’s written quotations, acknowledgements,
and/or purchase orders. It is recommended that the user secure specific, up-to-date
data and information regarding each application and/or use of such products.
One Great ConnectionSM
B-AFS102 0105 1M
© 2004 Alcoa Fastening Systems
E-mail: info@huck.co.uk • www.alcoafasteningsystems.com
4