Product Technical Guides : US-EN Direct Fastening - Volume 1 Edition 22 | Page 81

Direct Fastening Technical Guide , Edition 22
3.2.14.6.3 Technical data
Allowable loads in steel base material 5 / 16 ” or greater 1 , 2 , 3 , 4 , 5 , 6
Load Type
Minimum ASTM A36 steel
Tension , lb ( kN ) 340 ( 1.5 )
Shear , lb ( kN ) 500 ( 2.2 ) Moment , ft-lb ( Nm ) 6 ( 8.1 ) Torque , ft-lb ( Nm ) 6 ( 8.1 )
1 The tabulated allowable load values are for the X-BT-MF fastener only , using a safety factor of 5.0 to the average ultimate values obtained in testing . Wood or steel members connected to the substrate must be investigated in accordance with accepted design criterion . 2 Minimum edge distance and minimum spacing are 1 / 4 " and 5 / 8 ", respectively . 3 Multiple fasteners are recommended for any attachment . 4 Based on service temperature from -40 ° F to + 140 ° F ( -40 ° C to + 60 ° C ) and installation temperature from 14 ° F to 140 ° F ( -10 ° C to + 60 ° C ). 5 Use with Hilti glass-fiber reinforced polyamide ( FRP ) flange nuts , M10 and W10 . 6 Not to be used with any additional washer which provide an axial force when deformed , e . g . spring or lock washer , etc . Lock washer will affect the integrity and functionality of Hilti glassfiber reinforced polyamide ( FRP ) flange nuts .
Spacing and edge distances
Spacing : ≥ 15 mm
> 6 [ 0.236 "]
> 15 [ 0.591 "]
> 15 [ 0.591 "]
Edge distance : ≥ 6 mm
> 6 [ 0.236 "]
> 8mm [ 5 / 16 "]
Thickness of fastened materials Remark : for group fastenings subjected to shear loading the fastened material hole diameter should not exceed 14 mm ( 0.55 '').
Checking stand-off from the base material
2.0 ≤ t I
≤ 10.0 mm 0.07 '' ≤ t I
≤ 0.39 ''
Fastened material hole ø 13 mm ( 0.51 '')
h NVS
= 25.7 – 26.8 mm = 1.012 '' - 1.055 ''
Applications
Cable tray on channel Switch box on channel
Fastening slotted struts on steel structures
Cable ladder with Z-clamp Cable conduit clip
Fastening electrical accessories directly on steel structures
3.2.14.6.4 Installation instructions Installation Instructions For Use ( IFU ) are included with each product package . They can also be viewed or downloaded online at www . hilti . com . Because of the possibility of changes , always verify that downloaded IFU are current when used .
Proper installation is critical to achieve full performance . Training is available on request . Contact Hilti Technical Services for applications and conditions not addressed in the IFU .
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