S-BT Threaded Fastener Specification
Table Of Contents
- 1.1 Definition
- 1.2 The S-BT system
- 1.3 Fastening mechanism
- 1.4 S-BT system features and benefits – simplified fastening to steel
- 2.1 Grating fastening system
- 2.2 Grating fastening system X-FCS-R
- 2.3 S-BT with MM and MQ installation channel system
- 2.4 Fastening instrumentation, junction boxes and lighting
- 2.5 Fastening cable / conduit connectors
- 2.5 Fastening cable tray supports
- 2.7 Electrical connections
- 3.1 Product data
- 3.2 Load data
- 4.1 Instruction for use - S-BT-MF M6, M8, M10, W6, W10
- 4.2 Instruction for use - S-BT-MF M8/7 AN 6
- 4.3 Instruction for use - S-BT-MR M6, M8, M10, W6, W10 SN 6
- 4.4 Instruction for use - S-BT-MR M8/7 SN 6
- 4.5 Instruction for use - S-BT-MR M6, M8, M10, W6, W10 SN 6 AL
- 4.6 Instruction for use - S-BT-MR M8/7 SN 6 AL
- 4.7 Instruction for use - S-BT-GF M8/7 AN 6
- 4.8 Instruction for use - S-BT-GR M8/7 SN 6
- 4.9 Instruction for use - S-BT-GR M8/7 SN 6 AL
- 4.10 Instruction for use – S-BT-EF M6/W6/M8
- 4.11 Instruction for use – S-BT-EF M10/W10
- 4.12 Instruction for use – S-BT-ER M6/W6/M8
- 4.13 Instruction for use – S-BT-ER M10/W10
- 4.14 Instruction for use – S-BT-EF W10 HC AWG2/0 and S-BT-EF M10 HC 35/120
- 4.15 Instruction for use – S-BT-ER W10 HC AWG2/0 and S-BT-ER M10 HC 35/120
- 5.1 Nomenclature and symbols
- 5.2 Design concepts
- 5.3 Static capacity of the S-BT threaded stud
- 5.4 Vibration effects on S-BT threaded stud fastenings
- 5.5 Resistance of S-BT fastenings under dynamic tensile loading
- 5.6 Effect of S-BT threaded stud fastenings on the fatigue strength of base material structural steel
- 5.7 Influence of glue coatings on the loosening torque
- 5.8 S-BT-ER and S-BT-EF screw-in threaded studs for electrical connections
- 5.9.5 Conductivity disc of S-BT-ER / -EF electrical connectors
- 5.9.4 Stainless steel S-BT studs
- 5.9.3 Carbon steel S-BT studs
- 5.9.2 Galvanic (contact) corrosion
Specifications page 27
S-BT Screw-in threaded studs
V
N
M
V
N
Z
1
Z
2
Z
3
Conditions for recommended loads and design loads:
• UseS-BT-MRandS-BT-MF(multipurposefastening)onlywiththeattached
HiltiserratedangenutsM8,M10,W10(⑤or⑥refertosection3.1.1)
• Thedesignresistancecanbeusedforthedesignaccordingthepartialsafety
concept,e.g.EN1993-1-1(Eurocode3).
• GlobalfactorofsafetyΩresp.partialfactorofsafetyγ
m
(basedon5%fractileultimatetestvalue)
Recommended loads Design loads
staticpull-out 2.80 2.00
staticshear 2.80 2.00
Bending 1.75 1.25
• Minimumedgedistance=6mm[0.24"],spacing≥18mm[0.709"]
•
Effectofbasemetalvibrationandstress(e.g.areaswithtensilestress)considered.
• Redundancy(multiplefastening)mustbeprovided.
• Ifeccentricloadingexists(e.g.useofanangleclip),momentscausedby
off-centerloadingmustbeconsidered.
Cyclic loading:
S-BTthreadedstudsareonlytobeusedforfasteningssubjecttostaticorquasi-
static loading.
InquireatHiltifortestdataifcyclicloadinghastobeconsideredinthedesign.
3.2.2 Design loads
S-BT-MR / S-BT-GRmadeofstainlesssteel
Base material
thickness
t
II
≥5mm
t
II
≥0.20"
3mm≤t
II
<5mm
0.12"≤t
II
<0.20"
Base material type Steel
S235
A36
Steel
S355,
S420
Grade50
Aluminum
R
m
≥270N/mm²
Steel
S235
A36
Steel
S355,
S420
Grade50
Tension,N
Rd
[kN/lb] 2.7/605 3.2/715 2.7/605 2.5/560 3.0 / 670
Shear,V
Rd
[kN/lb]
For edge distance
6mm[0.24"]
≤c<15mm[0.59"]
3.5/785 3.9/875 4.0/895 3.4 / 760 3.5/785
Shear,V
Rd
[kN/lb]
For edge distance
c≥15mm[0.59"]
5.6/1255 5.6/1255 5.0/1120
5.3/
1190
5.3/
1190
Moment,M
Rd
[Nm/lbft] 15.6/12.0
S-BT-MF / S-BT-GFmadeofduplex-coatedcarbonsteel
Base material
thickness
t
II
≥5mm
t
II
≥0.20"
3mm≤t
II
<5mm
0.12"≤t
II
<0.20"
Base material type Steel
S235
A36
Steel
S355,
S420
Grade50
Aluminum
R
m
≥270N/mm²
Steel
S235
A36
Steel
S355,
S420
Grade50
Tension,N
Rd
[kN/lb] 2.8/625 3.3 / 740 n. a. 2.7/605 3.2/715
Shear,V
Rd
[kN/lb]
For edge distance
6mm[0.24"]
≤c<15mm[0.59"]
3.5/785 3.9/875 n. a. 3.4 / 760 3.5/785
Shear,V
Rd
[kN/lb]
For edge distance
c≥15mm[0.59"]
3.8/850 4.0/895 n. a. 3.8/850 4.0/895
Moment,M
Rd
[Nm/lbft] 9.4/7.0 n. a. 9.4/7.0