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I need to hang a swing (picture attached) from a large wood beam in my living room. The beam is 1 foot high and 1/2 foot wide. (quite strong).

I am planning to use 2 metal faceplates . Each faceplate has a hook welded to it and has 3 holes. The holes are 1/2 inch in diameter.

The swing seating area is a flat plank.

Need to support up to 1000 lbs total.

Q: Can I drill a lag screw / nut vertically to hang the swing ? (picture) Q: If so, what are the recommended lag screw dimensions: 1/2 inch diameter x 6 inches long or 1/2 inch diameter x 4 inches long ?

Q: alternatively, can I use a 1.2 inch diameter - sleeve anchor ? or is this only for concrete?

Photos attached: enter image description here enter image description here enter image description here enter image description here thank you

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No, I would not trust those welds to hold for long under the loading effects due to swinging.

I would get bolts / hooks (3/8" dia min) that bolt through the plate which I would also have as 3/8" thick.

Edit, how about these:

enter image description here

Link to source https://www.easternjunglegym.com/heavy-duty-ductile-swing-hanger

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    You have got to be kidding welding is the best method for this if properly done- – Ed Beal May 15 '19 at 14:04
  • @EdBeal seen too many welds fail due to cyclic loading... Obviously depends on the experience of the welder and the design - if the weld is on the reverse side as well that is a different proposition - but that is not shown on the OP's drawing as that part is only in dotted. If it was welded on both sides ie a through hole then it would be shown as a solid circle... – Solar Mike May 15 '19 at 15:21
  • Look at the pictures these are professional looking parts. – Ed Beal May 15 '19 at 15:23
  • Pictures should be in the post - I don't follow links as a rule... – Solar Mike May 15 '19 at 15:31
  • New users often have a hard time posting pics. – Ed Beal May 15 '19 at 17:48
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I would want 4 screws as you are showing a square plate but 3ea 1/2” on either side at 4” will provide plenty of static load. since you did not state the type of beam I looked up hem fir the softest, the chart said in dry wood 230 lbs ea for shear and withdrawal 437 lbs , since you will be swinging I would cut those numbers in half and you still have enough with 3 on each side. Edit: after looking at your pictures the screw placement is fine for 3ea and your project should be fine those look like nice brackets.

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