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
page88 Specifications
Fastener
Carbon steel
2)
S-BT-MF
S-BT-MFMT
S-BT-GF
S-BT-GFNG
S-BT-EF
Stainless steel
S-BT-MR
S-BT-MRMT
S-BT-GR
S-BR-GRNG
S-BT-ER
Coating / material
Duplex-coated
carbon steel
A4
AISI 316
Environmental conditions Fastened part
Dry indoor
Steel(zinc-coated,painted),aluminium,
stainless steel
◼ ◼
Indoorwithtempo-
rary condensation
Steel(zinc-coated,painted),aluminium
◼
◼
Stainless steel
‒
Outdoorwithlow
pollution
Steel(zinc-coated,painted),aluminium
◻
1,2)
◼
Stainless steel
‒
Outdoorwithmode-
rate concentration
ofpollutants
Steel(zinc-coated,painted),aluminium
◻
1,2)
◼
Stainless steel
‒
Coastal areas
Steel(zinc-coated,painted),aluminium,
stainless steel
‒ ◼
Outdoor,areaswith
heavyindustrial
pollution
Steel(zinc-coated,painted),aluminium,
stainless steel
‒ ◼
Closeproximityto
roads
Steel(zinc-coated,painted),aluminium,
stainless steel
‒ ◼
Special
applica-
tions
Consultexperts
◼=expectedlifetimeofS-BTfastenersmadefromthismaterialistypicallysatisfactoryinthespeciedenvironment
basedonthetypicallyexpectedlifetimeofabuilding.
◻=adecreaseintheexpectedlifetimeofnon-stainlessfastenersintheseatmospheresmustbetakeninto
account(≤25years).Higherexpectedlifetimeneedsaspecicassessment.
‒ =S-BTfastenersmadefromthismaterialarenotsuitableinthespeciedenvironment.Exceptionsneeda
specicassessment.
1)
Fromatechnicalpointofview,duplexcoatingsaresuitableforoutdoorenvironmentswithcertainlifetime
andapplicationrestrictions.Thisisbasedonlong-termexperiencewiththesematerialsasreectede.g.inthe
corrosionratesforZngivenintheISO9224:2012(corrosivitycategories,C-classes).
2)
ETA-20 / 0530allowstheuseofcarbonsteelthreadedstudswithduplexcoatingonlyindryindoorenvironments
(C1acc.toENISO9223).
Important notes:
Nationalorinternationalcodes,standardsorregulations,customerand / orindustry
specicguidelinesmustbeindependentlyconsideredandevaluated.These
guidelinesapplytoatmosphericcorrosiononly.Specialtypesofcorrosion,suchas
crevicecorrosionmustbeindependentlyevaluated.
Thetablespublishedinthisbrochuredescribeonlyageneralguidelinefor
commonlyacceptedapplicationsintypicalatmosphericenvironments.
Suitabilityforaspecicapplicationcanbesignicantlyaffectedbylocalized
conditions,includingbutnotlimitedto:
•Elevatedtemperaturesandhumidity
•Highlevelsofairbornepollutants
•Directcontactwithcorrosiveproducts,suchasfoundinsometypesof
chemically-treatedwood,wastewater,concreteadditives,cleaningagents,etc.
•Directcontacttosoil,stagnantwater
•Directcontacttofresh / youngconcrete(lessthan28daysold)
•Electricalcurrent
•Contactwithdissimilarmetals
•Connedareas,e. g.crevices
•Physicaldamageorwear
•Extremecorrosivityduetocombinedeffectsofdifferentinuencingfactors
•Enrichmentofpollutantsontheproduct
•Natureoffasteningpart:fastenermustbemadeofamorenoblematerialorthe
same material than the fastened part