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 37
S-BT Screw-in threaded studs
Shinyringaroundtheborehole
T
re
c
3.2.16 Installation details
S-BT fastener made of stainless steel with washer-Ø 12 mm (S-BT-_R)
FastenedmaterialholeØ≥13mm[0.51"]
S-BTfastenermadeofcarbonsteelwithwasher-Ø10mm(S-BT-_F)
FastenedmaterialholeØ≥11mm[0.43"]
Remark:forgroupfasteningssubjectedtoshearloadingthe
fastenedmaterialholediametershouldnotexceed14mm[0.55"]
(S-BT-_R)and12mm[0.47"](S-BT-_F)respectively.
① Mark location for each fastening
② Pre-drill with TS-BT stepped drill bit
UsageofSBT4-A22,SFBT18-AorSFBT22-A.Pre-drilluntiltheshoulder
grindsashinyringtoassureproperdrillingdepth.
Beforefastenerinstallation:Thedrilledholeandtheareaaroundthedrilledhole
mustbeclearofliquidsanddebris.
③ Screw-in S-BT studs into drilled hole
UsageofSBT4-A22,SF4-A22,SFC18-AorSFC22-Aincombinationwiththe
calibrateddepthgaugeS-DGBT.
Verifystudstandoffh
NVS
withcheckgaugeS-CGBT
Sealingwashermustbeproperlycompressed!
④ Hang channel or accessory on studs
Tightennutsbyhand
⑤ Tighten the nuts with the suited tightening torque T
rec
T
rec
refertotablebelow.
Tightenthenutsusing
–SBT4-A22,SF4-A22,SFC18-A / 22-AwithsocketS-NS
–torquetoolX-BT¼"(8Nm)orS-BT¼"(5Nm)
–torquewrench
T
rec
5 Nm 8 Nm
Hilti screw driver: Torque setting:
SBT 4-A22 4 5
SF 4-A22 5 10
SFC18-A 4 5
SFC 22-A 4 5
Tighteningtorqueserratedangenut(MultipurposeFastenings):
S-BT-______________6
Drill hole type
and base material
thickness
Pilothole,t
II
≥6mm[0.24"]
Drillthroughhole,
5mm[0.20"]≤t
II
<6mm[0.24"]
Drillthroughhole
3mm[0.12”]
≤t
II
<5mm[0.20"]
Base material
Steel
S235
A36
Steel
S355,S420
Grade50
Aluminum
R
m
≥270N/mm²
Steel
S235
A36
Steel
S355,S420
Grade50
Tighteningtorque
serratedangenut
T
rec
[Nm/lbft]
8/5.9 8/5.9 5/3.6 5/3.6 5/3.6
Important notes:
Thetighteningtorque(T
rec
)fortheserratedangenutisdependentonthestud
type,thebasematerialtypeandthickness,andthedrillholetype.Exceedingthe
tighteningtorque(T
rec
)leadstodamageoftheS-BTstud’sanchoragewithnegative
impactontheloadvaluesandthesealingfunction.