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 page97
S-BT Screw-in threaded studs
V
N
M
V
N
M
Stabilityofthetestspecimenwasgivenduringthe60testminutes.Allinstalled
S-BTstudswereabletomaintaintheirloads(ref.toTable1andTable2)fora
periodof60minuteswhilstthebulkheadwassubjectedtoatest,whichutilized
theconditionsgiveninIMOResolutionMSC.307(88),FTPCode,2010for“A-0”
bulkheads.Therewasnooccurrenceofanyflamingorsmokeontheunexposed
surfaceofthespecimenduringthetest.Inthetestspecimentherewereno
openingsorcracksvisibleduringthewholetestperiod.
Conclusions
BothbulkheadspassedtheperformancecriteriaofIMOResolutionMSC.307(88),
FTPCode,2010for“A-0”bulkheads.TheinstalledS-BTstudsdidn’taffectthere
resistanceofsteelbulkheadsandthestudswereabletomaintaintheirloadsfora
periodof60minutes.
BasedonthetestresultstheuseofS-BTstudsforapplicationsinrerated
boundariesonshipscanberecommended.
Recommendedloadsforapplicationsinreratedboundaries
S-BT-______________6
Base material
SteelwithyieldstrengthR
eH
235MPa≤R
eH
≤355MPa
(ordinarystrengthe.g.S235,GradeAupto
higherstrengthe.g.S355,GradeAH36)
Drill hole type and base
materialthickness
Pilothole,t
II
≥6mm[0.24"]
Drillthroughhole,
5mm[0.20]≤t
II
<6mm[0.24"]
Drillthroughhole
3mm≤t
II
<5mm
Tension,R60,N
rec,
[kN/lb] 0.50 / 112 0.25 / 56
Shear,R60,V
rec,
[kN/lb] 0.50 / 112 0.25 / 56
Conditions for recommended loads:
•UseS-BT-MRandS-BT-MF(multipurposefastening)onlywiththeattached
HiltiserratedangenutsM8,M10,W10(➄or➅refertosection3.1.1)
•S-BTstudsinstalledontheunexposedfaceofthebulkhead
•GlobalfactorofsafetyΩ,
forstaticpull-outandstaticshear=1.0.
•Minimumedgedistance=6mm[0.24"],spacing≥18mm[0.709"]
•Redundancy(multiplefastening)mustbeprovided.
•Ifeccentricloadingexists(e.g.useofanangleclip),momentscausedby
off-centerloadingmustbeconsidered.
Literature:
[1]MPADresden:TestReportNo.20170384,MPADresdenGmbH–IMO
RecognizedTestLaboratory,Dresden(D),July20
th
,2017
[2]MPADresden:TestReportNo.20161614,MPADresdenGmbH–IMO
RecognizedTestLaboratory,Dresden(D),July21
st
,2017
[3]IMOResolutionMSC.307(88),FireTestProcedureCode,2010