1. Anchor
Channel Systems
2. HAC
Portfolio
3. HAC
Applications
4. Design
Introduction
5. Base material
Table 2.2.19.3 —
Channel lip thickness
Table 2.2.19.2 — Hilti Serrated Channel Bolts dimensions
Channel
Bolt
Anchor
Channel
Profile
Units
mm
M16
(in)
L
40-200
HAC-T50
(1.57-7.87)
18.5 33
12.0
(0.55) (1.30)
40-200
HAC-T70
(0.47) (1.57-7.87)
mm M10 19.0 34.0
(in) M12 (0.75) (1.34)
9.2
40-200
(0.36) (1.57-7.87)
14. Design
Example
2.2.20 HILTI CHANNEL BOLTS HARDWARE
Hexagonal head nut
Anchor channel systems consist of a group of anchors, channel
profile, and matching t-bolt. The t-bolt hardware consists of a
hex head nut and a flat washer.
Table 2.2.20.1 — Material specifications of HBC-T nuts
Material specifications
Material ASTM A 563 Grade A; Stainless Steel 316
Dimensions ASME/ANSI B18.2.2-1986
Finish ASTM B 633-98, SC 1 Type I
Thread Class 2A fit; Class 2B thrd; ASME B1.1
Figure 2.2.20.1 — Isometric view if HBC-T nut.
1.75 2.00 2.50
c max. mm 0.60 0.80 0.80
min. mm 0.15 0.20 0.20
max. mm 13.00 17.30 21.60
min. mm 12.00 16.00 20.00
d w min. mm 16.60 22.50 27.70
Table 2.2.19.4 – Recommended t-bolt overhang, L o
e min. mm 20.03 26.75 32.95
Hilti locking channel bolt
diameter (mm)
max. mm 10.80 14.80 18.00
Serrations of channel lip allow incremental
longitudinal displacement of 1/8” (3 mm). If the
bracket needs to be slightly adjusted, while a
force is applied (i.e. hung panel), the HBC-T will not slide. The M16
1/8 in
min. mm 10.37 14.10 16.90
min. mm 8.30 11.30 13.50
max. mm 18.00 24.00 30.00
min. mm 17.73 23.67 29.16
m w
(3 mm)
13/64 in
s
(5 mm)
9/32 in
M20
(7 mm)
Table 2-2.19.5 — Installation torque for Hilti Serrated Channel Bolts (HBC-T and HBC-B)
Figure 2.2.20.2 — HBC-T nut dimensions.
Different surfaces and materials might have a significant
influence on the ratio between torque moment and pre-tension.
Therefore, it is important to use the washer as per product
approval or recommended by Hilti.
Installation Torque
Installation torque Tinst
(Installation type A) 1
m
M12
Minimum nominal overhang,
L o
Installation torque Tinst
(Installation type B) 2
Units
HAC-30 F
HAC-T50 F
HAC-T50 S
HAC-T70
HAC-30 F
HAC-T50 F
HAC-T50 S
ft-lb (Nm) 11 (15) N/A 11 (15) N/A
HBC-B M12 4.6 ft-lb (Nm) 19 (25) N/A 19 (25) N/A
ft-lb (Nm) N/A 55 (75) N/A 55 (75)
ft-lb (Nm) N/A 74 (100) N/A 136 (185)
HBC-T M20 8.8 ft-lb (Nm) N/A 89 (120) N/A 236 (320)
1 Installation type A: The fixture is in contact with the channel profile and the concrete surface
2 Installation type B: The fixture is fastened to the anchor channel by suitable steel part (e.g. square plate washer), fixture is in contact with the channel profile only
84
Cast-In Anchor Channel Product Guide, Edition 1 • 02/2019
85
HBC-T M12 8.8 HBC-T M16 8.8
HAC-T70
HBC-B M10 4.6 mm p a (pitch size) M20
M16 M12 units Criteria
d a
Figure 2.2.19.4 — Overhang of Hilti Channel Bolts (HBC-T).
Table 2.2.20.2— Dimensions of HBC-T Nuts
Onsite adjustability
Bolt type
(7.5 mm)
HBC-T need not to be loaded in order to reposition the bracket.
Therefore, it is not acceptable to adjust the location of the
t-bolts via hammering of the bracket, if the weight of the panel is
applied on the bracket
There is no maximum thread protrusion limitation from the
standpoint of the function of the bolt.
If needed, the excess at the end of the bolt can be cut-off. The
nut shall be fully engaged. The outside face of the head of the
t-bolt has special markings to identify the t-bolt type and proper
head orientation of the t-bolt. If the t-bolt is to be cut or grind,
inspect and ensure the orientation and t-bolt type is as specified
prior to any work on the t-bolt. If the marking on the t-bolt are
removed, proper inspection is not possible. Proper corrosion
protection shall be required.
19/64 in
13. Field Fixes
According to AISC Steel Construction Manual, 13th Edition,
Section 14-10: “Adequate thread engagement for anchor rods is
identical to the condition described in the RCSC Specification
as adequate for steel to steel structural joints using high
strength bolts: having the end of the [anchor rod] flush with or
outside the face of the nut”.
13/64 in
(5.2 mm)
12. Instructions
for Use
Minimum t-bolt overhang
HAC-30
HBC-T
(compatible
with HAC-T)
(3.10 mm)
11. Best
Practices
HBC-B
(compatible
with HAC-30)
(2.36-7.87)
1/8 in
10. Design
Software
60-200
M20
(in)
HAC-30
k
Channel lip
thickness,
l th
9. Special Anchor
Channel Design
mm
mm
HBC-B
b 2
M12
(in)
HBC-T
b 1
Anchor
Channel
profile
8. Reinforcing
Bar Anchorage
Diameter ø
HAC-T50
HAC-T70
Channel
bolt
length
Dimensions
7. Anchor Channel
Design Code
Hilti Serrated Channel Bolt length (HBC-T and HBC-B)
6. Loading