DNV-GL Approval TAS00001SV-3 for X-BT-GR, X-BT-MR and X-BT-ER threaded fasteners

Job Id: 262.1-029495-3
Certificate No: TAS00001SV
Revision No: 3
Form code: TA 251 Revision: 2016-12 www.dnvgl.com Page 4 of 9
APPLICATION/LIMITATION
Conditions of applications, installation instructions and load data are to be observed according to the
„New Generation Hilti X-BT-GR, X-BT-MR and X-BT-ER Threaded Fastener Specification” (July 2019).
In general, the installation of the fasteners may be carried out in areas where drilling for bolting is
permissible.
The fasteners may also be used for applications other than those listed below, subject to special
consideration either by the local DNV GL Surveyor.
CARBON STEEL BASE MATERIAL
The HILTI X-BT Fastening System is type examined for fastening various materials to base metals of
carbon steel on board ships and other structures classed by DNV GL as follows:
• Metal and fiberglass gratings to steel
• Cable, conduit and tubing connectors to steel
• Trays, channels and struts to steel for cable, conduit and tubing runs
• Instrumentation, junction boxes, lighting
• Pipe hangers
• Signage
• Door frames
• Mounting cabinets, securing furniture, utensils, etc.
• Grounding and bonding equipment (e.g. for equipment, pipe flanges, storage tanks,
junction boxes etc.)
Base Material:
Thickness t
II
: t
II
≥ 8 mm (5/16”) - without through penetration/damage of backside coating.
For thinner base material thickness (4 mm ≤ t
II
< 8 mm)
the load reduction factor (for tensile and shear forces of X-BT fastener) applies
Tensile Strength: No limits with regard to steel strength.
Coating: coating thickness ≤ 500 µm
Fasteners should be installed with a distance of ≥ 10 mm (3/8”) from the edge of a flange or cutout.
In case of edge distance 6 mm (1/4”) ≤ c < 10 mm (3/8”), tension, shear and moment need to be
reduced with the reduction factor:  = 0.65.