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 page29
S-BT Screw-in threaded studs
3.2.4 Design loads S-BT with Hilti standoff adapter
S-BT-MR / S-BT-MRMT / S-BT-GR
with standoff adapter made of stainless steel
Base material
thickness
t
II
≥5mm[0.20"]
t
II
=4mm
[0.16"]
t
II
=3mm
[0.12"]
Base material type Steel
S235
A36
Steel
S355,S420
Grade50
Steel
*)
S235
A36
Steel
*)
S235
A36
Tension,N
Rd
[kN/lb]
Standoff Adapter
25,50,75,100mm
2.65/595 3.18/715 2.50/560 2.50/560
Shear,V
Rd
[kN/lb]
StandoffAdapter25mm
1.17 / 260 1.41/315 0.96/215 0.77 / 170
Shear,V
Rd
[kN/lb]
StandoffAdapter50mm
0.64 / 140 0.76 / 170 0.53/120 0.43/95
Shear,V
Rd
[kN/lb]
StandoffAdapter75mm
0.47/105 0.55/125 0.39/90 0.34/75
Shear,V
Rd
[kN/lb]
Standoff Adapter 100 mm
0.32 / 70 0.39/90 0.27 / 60 0.25/55
S-BT-MF / S-BT-MFMT / S-BT-GFwithstandoff
adaptermadeofduplexcoatedcarbonsteel
Base material
thickness
t
II
≥5mm[0.20"]
t
II
=4mm
[0.16"]
t
II
=3mm
[0.12"]
Base material type Steel
S235
A36
Steel
S355,S420
Grade50
Steel
*)
S235
A36
Steel
*)
S235
A36
Tension,N
Rd
[kN/lb]
Standoff Adapter
25,50,75,100mm
2.75/615 3.30 / 740 2.65/595 2.65/595
Shear,V
Rd
[kN/lb]
StandoffAdapter25mm
1.17 / 260 1.41/315 0.96/215 0.77 / 170
Shear,V
Rd
[kN/lb]
StandoffAdapter50mm
0.64 / 140 0.76 / 170 0.53/120 0.43/95
Shear,V
Rd
[kN/lb]
StandoffAdapter75mm
0.47/105 0.55/125 0.39/90 0.34/75
Shear,V
Rd
[kN/lb]
Standoff Adapter 100 mm
0.32 / 70 0.39/90 0.27 / 60 0.25/55
*)ForsteelbasematerialofgradeS355,S420,S390GD,S420GD,AH36,DH36,EH36thevalues
areallowedtobeincreasedupto20%.
Conditions for recommended loads and design loads:
• 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
• Minimumedgedistance=15mm[0.59"],spacing≥18mm[0.709"]
•
Effectofbasemetalvibrationandstress(e.g.areaswithtensilestress)considered.
• Redundancy(multiplefastening)mustbeprovided.
• Maximumdisplacementindirectionoftheshearforce≤2.0mm[0.08"]
N
V