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 page93
S-BT Screw-in threaded studs
5.10.5 ConductivitydiscofS-BT-ER / -EFelectricalconnectors
TheconductivitydiscoftheS-BT-ER / -EFHCismadefromcopperalloyCuSn8
withatin-coatingonthesurfaceandasealingringonthebottomside.Thecopper
alloyisclassiedaslargelyinsensitivetostresscorrosioncrackingandpitting
corrosion.Theconductivitydiscisdesignedforuseincorrosioncategories
C1 – C5accordingtoENISO9223.Itisthereforesuitableforuseinaggressive
environmentslikecoastalandoffshoreapplications.
5.10.6 StandoffAdapters
Standoffadaptersmadeofduplex-coatedcarbonsteel
The coating of the carbon steel standoff adapters consists of an electroplated
Zn-alloyforcathodicprotectionandatopcoatforchemicalresistance(Duplex-
coating).TheuseofthiscoatingislimitedtothecorrosioncategoryC1,C2
andC3accordingthestandardENISO9223.Forhighercorrosioncategories
stainlesssteelstandoffadaptersshouldbeused.
Standoff adapters made of stainless steel
The stainless steel standoff adapters are made from the stainless steel type
1.4401(AISI316).Thisgradeofstainlesssteelisclassiedascorrosionresistance
classIIIaccordingtoDINEN1993-1-4:2015,whichmakesthematerialsuitablefor
outdoorapplicationsandatmospherescontainingchlorideions,i.e.coastalareas
andareasnearroadstreatedwithde-icingsalts.
5.10.7 HiltiCouplerRC-MFandRC-MR
HiltiCouplerRC-MFmadeofduplex-coatedcarbonsteel
ThecoatingofthecarbonsteelHiltiCouplerRC-MFconsistsofanelectroplated
Zn-alloy for cathodic protection and a top coat for chemical resistance
(Duplex-coating).Theuseofthiscoatingislimitedtothecorrosioncategory
C1,C2andC3accordingthestandardENISO9223.Forhighercorrosion
categoriesstainlesssteelstandoffadaptersshouldbeused.
Hilti Coupler RC-MR made of stainless steel
ThestainlesssteelHiltiCouplerRC-MRaremadefromthestainlesssteeltype
1.4401(AISI316)or1.4404(AISI316L).Thesegradesofstainlesssteelare
classiedascorrosionresistanceclassIIIaccordingtoDINEN1993-1-4:2015,
whichmakesthematerialssuitableforoutdoorapplicationsandatmospheres
containingchlorideions,i.e.coastalareasandareasnearroadstreatedwith
de-icing salts.