Product Technical Guides : US-EN Direct Fastening - Volume 1 Edition 22 | Page 98

3.2.16.3.2 STANDOFF ADAPTOR WITH X-BT THREADED STUDS AND PFP COATED STEEL
Mark location of each fastening .
Pre-drill with TS-BT 31-74 PFP stepped drill bit …
Pre-drill with TX-BT stepped drill bit …
… until shoulder grinds a shiny ring . The area must be clean and free from liquids and debris .
Set X-BT studs into drilled hole .
Tighten the standoff adapter with the recommended installation torque of 8 Nm .
Close the opening less than 4 hours after the opening is made in accordance to the patching instructions by the PFP-manufacturer .
Position accessory on standoff adapter and hold in place .
Fasten the accessory on the standoff adapter with the recommended installation torque of 20 Nm .
Notes : 1 . See section 3.2.16.5 and 3.2.15 for more detailed instructions on the setting procedure for S-BT threaded studs . 2 . The Standoff Adaptor can be used with S-BT threaded studs for applications similar to those shown above . Both the X-BT and S-BT can also be used in applications where Passive Fire Protection ( PFP ) coating is not present . The installation process is similar but does not include removal of the PFP . See application instructions 3.2.16.3.1 above for more information .
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