Bolt and Socket sizing for KWIK Bolt TZ2

Hi Jake,

Per Hilti’s KB-TZ2 Operating Instructions, the 3/8” diameter anchor requires a 9/16” socket and the 1/2” anchor requires a 3/4” socket. Please also note that the fixture hole diameter is 7/16” for the 3/8” anchor and 9/16” for the 1/2” anchor. Anchor selection is at the discretion of the Engineer of Record, while considering loading and geometry parameters. KB-TZ2 technical data can be found in ICC ESR-4266 for further design information.

Best,
Sam

I've seen 3/8 inch bolts/anchors installed many times in these struts. 1/2 inch is possible but not very easy.