Huck 360® Technical Brochure

Huck 360
®
Advanced
Fastening System
Free-spinning installation
Absorbs high spike loads
Vibration and fatigue resistant
3/8" – 1-3/8", 10mm – 36mm
Huck 360 System
®
The engineered nut-and-bolt fastening system from the leader in vibration-resistant fastening, Huck.
The goal was simple: to design a high-strength bolting
system that resists vibration loosening, no matter
how extreme the environment. This system should
offer quick installation and removal with conventional
tools, deliver superior fatigue strength, and hold tight
under high spike loads.
The result is the Huck 360®, the most advanced nutand-bolt fastening system you’ll find on the market
today. Easy-to-install, the Huck 360 fastening system
is engineered to be virtually maintenance free and
resistant to vibration, even under extreme conditions.
The Huck 360® System is available in
3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-3/8",
10mm, 12mm, 16mm, 20mm, and 36mm.
The difference is in the design
Huck 360® stays tight under severe vibration loading by eliminating
the “gap” around the crest of the bolt. When tightened, the Huck 360
fills this gap, which prevents transverse motion between the 360 nut
and bolt, keeping the assembly in place.
Huck 360®
Conventional thread
TR AN SVER SE
VI B R ATION
BOLT
N UT
Thread Flanks are Locked.
Nut cannot move relative to bolt.
2
BOLT
N UT
Thread Flanks can slide.
Nut can move relative to bolt.
Transverse vibration comparison
CLAMP LOAD (lbf)
®
This chart shows that once vibration
begins, clamp load quickly decays with
conventional nuts and bolts, while it
holds constant with Huck 360®.
Increased life
Because the Huck 360® was designed with shallow, low-notch factor bolt
threads (the grooves aren’t rolled as deep as a conventional bolt), the effective
area of the fastener itself is widened by as much as 20%, increasing tensile and
fatigue strength. In fact, the Huck 360 thread delivers 5 times the fatigue life
of a standard thread bolt.
Improved fatigue performance
Finite Element Analysis (FEA) reveals that the shallow thread
form of the Huck 360® results in 27% less axial stress in the
root than conventional bolt threads. Stress concentration is the
primary contributing factor leading to fatigue failures.
Huck 360®
Reduce maintenance, save time
The Huck 360 installs faster and more easily
than the nuts and bolts you’re accustomed
to using, and maintenance intervals can be
extended. The Huck 360’s superior fatigue
strength has proven to increase equipment
uptime and productivity.
®
Conventional thread
Huck 360 benefits
®
27% less stress
in the root of
the bolt thread.
■
Resists vibration loosening
■
Withstands high spike loads
■
Increases equipment uptime
■
■
Installs 300% faster than conventional
locknuts
Can be installed and removed with
conventional tools
Huck 360 Re-Usability
®
A Huck 360 nut and bolt can be retightened.
It can be reused if the nut and bolt set remains
free spinning after removal and reuse, with the
same torque requirements as the first installation.
®
3
Inch Data and dimensions
Inch HUCK 360® Grade 8 Bolt
Diameter
(inches)
DT(*)
A
B
H
T
D
6" or shorter
Over 6"
Min. Ult.
Tensile LBF
11,600
3/8
12
0.639
0.557
0.303
0.372
1.14
1.39
7/16
14
0.710
0.619
0.361
0.435
1.3
1.55
1/2
16
0.853
0.743
0.403
0.497
1.43
1.68
5/8
20
1.067
0.930
0.504
0.622
1.71
1.96
3/4
24
1.277
1.113
0.604
0.746
1.97
2.21
50,100
7/8
28
1.491
1.299
0.706
0.871
2.24
2.49
69,300
1
32
1.704
1.485
0.790
0.995
2.51
2.76
90,900
15,900
—
21,300
33,900
Additional diameters available upon request.
Head style (Hex)
Material
Length Code
Finish
36 0 H - DT ( * ) X ( * ** )( ** )
Diameter in 1/32" increments
Example: 360H-DT12X125 is a HUCK 360 fastener,
Hexagonal head, 3/8" Diameter, Length 1-1/4".
Lengths and Diameters
4
Nom.
Length
Length Code
(***)
DT12
"L" — Underhead Length (Inches)
1.250
DT14
DT16
DT20
DT24
DT28
DT32
1-1/4"
X125
1-3/8"
X137
1.375
1-1/2"
X150
1.500
1.500
1-5/8"
X162
1.625
1.625
1-3/4"
X175
1.750
1.750
1-7/8"
X187
1.875
1.875
2"
X200
2.000
2.000
2-1/8"
X212
2.125
2.125
2-1/4"
X225
2.250
2.250
2-3/8"
X237
2.375
2.375
2-1/2"
X250
2.500
2.500
2-5/8"
X262
2.625
2.625
2-3/4"
X275
2.750
2.750
2-7/8"
X287
2.875
2.875
3"
X300
3.000
3.000
3-1/4"
X325
3.250
3.250
3.250
3.250
3.250
3.250
3.250
3-1/2"
X350
3.500
3.500
3.500
3.500
3.500
3.500
3.500
2.000
Notes
2.250
2.250
2.500
2.500
2.750
2.750
2.750
3.000
3.000
3.000
1.Finishes: Black oiled (no suffix) or
Geomet (D1 suffix)
2.Raised or depressed Huck mark, six
equally spaced bars, and Huck mark
as shown.
3.000
3.000
3-3/4"
X375
3.750
3.750
3.750
3.750
3.750
3.750
3.750
4"
X400
4.000
4.000
4.000
4.000
4.000
4.000
4.000
4-1/4"
X425
4.250
4.250
4.250
4.250
4.250
4.250
4.250
4-1/2"
X450
4.500
4.500
4.500
4.500
4.500
4.500
4.500
4-3/4"
X475
4.750
4.750
4.750
4.750
4.750
4.750
4.750
5"
X500
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5-1/4"
X525
5.250
5.250
5.250
5.250
5.250
5.250
5.250
5-1/2"
X550
5.500
5.500
5.500
5.500
5.500
5.500
5.500
5/3/4"
X575
5.750
5.750
5.750
5.750
5.750
5.750
5.750
6"
X600
6.000
6.000
6.000
6.000
6.000
6.000
6.000
6-1/4"
X625
6.250
6.250
6.250
6.250
6.250
6.250
6.250
6-1/2"
X650
6.500
6.500
6.500
6.500
6.500
6.500
6.500
6-3/4"
X675
6.750
6.750
6.750
6.750
6.750
6.750
6.750
3.Material: Medium carbon alloy steel
Inch Huck 360® Nut
Diameter
(inches)
R(*)
C
F
J
M
Min. Ult.
Tensile LBF
3/8
12
0.779
0.679
0.45
0.349
11,600
7/16
14
0.848
0.739
0.525
0.407
15,900
1/2
16
0.99
0.863
0.6
0.465
21,300
5/8
20
1.202
1.047
0.75
0.581
33,900
3/4
24
1.413
1.231
0.9
0.697
50,100
7/8
28
1.625
1.416
1.04
0.805
69,300
1
32
1.836
1.6
1.2
0.93
90,900
Style
(Straight hex) Material
Finish
3 6 0 N H - R ( * )( ** )
Diameter in 1/32" increments
Example: 360NH-R12 is a HUCK 360
Straight Hex Nut, 3/8" Diameter.
Additional diameters available upon request.
Notes
1. Hardened washers recommended
(per ASTM F436 or equivalent).
2. Finishes: Zinc Electroplate with Red
Dye Chromate (no suffix) or Geomet
(D1 suffix)
3.Depressed Huck mark and “360 Bolt
Only” as shown for 5/8" diameter
and up. Depressed Huck mark only
for 1/2" diameter and under.
4.Material: Low carbon steel
5.All dimensions nominal and subject
to manufacturing tolerances.
5
Metric Data and dimensions
Metric HUCK 360® Class 10.9 Bolt
Diameter
(mm)
A
B
H
D
T
125 mm
<
— (4.92 in.)
>125 mm
< 200 mm
mm
> (200
—
7.87 in.)
Min. Ult.
Tensile kn
DT10
18
16
8
10
26
---
---
60.3
DT12
20
18
10
12
30
---
---
87.7
DT14*
24
21
11
14
34
40
---
120
DT16
27
24
13
16
38
44
---
163
255
DT20
34
30
16
20
46
52
---
DT24*
41
36
20
24
54
60
73
367
DT36
62
54
23
36
---
84
97
850
* Check for availability. Additional diameters available upon request.
Head style (Hex)
Material
Length in mm increments
M 360 - DT ( * ) X ( *** )( ** )
Diameter in mm increments
Finish
Example: M360H-DT10X045 is a Metric HUCK 360 fastener,
Hexagonal head, 10mm Diameter, Length 45mm.
Lengths and Diameters
6
"L" — Underhead Length (mm)
Nom. Length
(mm)
(***)
45
X045
45
50
X050
50
55
X055
55
55
60
X060
60
60
60
65
X065
65
65
65
70
X070
70
70
70
70
80
X080
80
80
80
80
80
90
X090
90
90
90
90
90
90
100
X100
100
100
100
100
100
100
DT10
DT12
DT14
DT16
DT20
DT24
DT36
50
65
Notes
110
X110
110
110
110
110
110
120
X120
120
120
120
120
120
1. Finishes: Black oiled (no suffix) or
Geomet (D1 suffix)
2.Raised or depressed Huck mark, 10.9,
and the number 360 as shown
130
X130
130
130
130
130
130
140
X140
140
140
140
140
140
150
X150
150
150
150
150
160
X160
160
160
160
160
180
X180
180
180
180
200
X200
200
200
200
220
X220
220
220
240
X240
240
240
260
X260
260
280
X280
280
300
X300
300
4. Material: Medium carbon alloy steel
5.All dimensions nominal and subject
to manufacturing tolerances.
Metric Huck 360® Nut
C
F
J
M
Min. Ult.
Tensile kn
20.41
18
11.94
9.30
60.3
R12
23.52
21
14.48
11.15
87.7
R14
26.94
24
16.76
13.00
120
Diameter
(mm)
R10
R16
30.38
27
19.05
14.76
163
R20
38.35
34
24.13
18.59
255
R24
46.28
41
28.70
23.30
367
R36
67.87
60
43.18
33.48
850
Style
(Straight hex) Material
Finish
M 3 6 0 N H - R ( * )( ** )
Diameter in mm increments
Example: M360NH-R10 is a Metric HUCK 360 Nut,
Straight hex style, 10mm Diameter.
Additional diameters available upon request.
Notes
1.Hardened washers recommended (per ASTM F436 or equivalent).
2.Finish: Zinc Electroplate, with Red Dye Chromate (no suffix) or
Geomet (D1 suffix)
3.Depressed Huck Mark and “360 Bolt Only” as shown for 16mm
diameter and up. Depressed Huck mark only for 14mm diameter
and under.
4.Material: Low carbon steel
5.All dimensions nominal and subject to manufacturing tolerances.
7
Alcoa Fastening Systems
®
For more than 120 years, the name Alcoa has been recognized worldwide as a strong leader in product quality and customer support. These
strengths are found in every product manufactured for Alcoa Fastening Systems, offering the greatest breadth and depth of fastening system
solutions in the industry.
Alcoa Fastening Systems (AFS) maintains company offices in the United States and in many other countries. AFS fastener distributors are
also located in many of the world’s industrial centers, where they provide a ready source of AFS fasteners, installation tools, tool parts, and
application assistance.
Americas
International Locations
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8001 Imperial Drive
Waco, TX 76712, USA
P.O. Box 8117
Waco, TX 76714-8117, USA
Tel: 800 388 4825
Fax: 800 798 4825
Installation Tool Division
1 Corporate Drive
Kingston, NY 12401, USA
Tel: 800 278 4825
Fax: 845 334 7333
AFS Industrial Distribution
Group Headquarters
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Tracy, CA 95376, USA
Tel: 209 839 3000
Fax: 209 839 3022
AFS Industrial Distribution
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Tel: 800 826 2884
Fax: 800 573 2645
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#1013 NBF Hibiya Bldg.
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Japan
Tel: +81 3 3539 6577
Fax: +81 3 3539 6585
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Suzhou Jiangsu 215126
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Tel: 0512 62823800-8888
Fax: 0512 62863810
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contained only in AFS’s written quotations, acknowledgments, 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.
© 2014 Alcoa Fastening Systems. All rights reserved.
AFS5517C 0114 1M
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United Kingdom
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Fax: +44 1952 2904 59
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