The illustrations and descriptions herein are applicable to production as of the date of this Technical Data Sheet. S/BB-5806 r8/31/17 Printed in U.S.A.

I have purchased these several times; the first time the ones I received had a recess behind the slot allowing a flush mount of a #8 flathead screw without carving a second recess in the workpiece to accomodate the screwhead. The other time I received my order of these they did not have the rear recess, requiring me to carve a second recess into the workpiece to accomodate the screw head. Seems like a picky issue until you account for the additional time required to correctly flush mount these hangers. Which type are you currently displaying? Mac Os X 10 5 Torrent Iso Psp there. A second photo showing the back of the hanger would be helpful. Worked great to hang a small shelf. The pieces are well made and it seems to be heavier duty than using a keyhole bit in a router to make the slot.

Thickness of the piece is 1/8' including the flared part. I mortised on my drill press with a 5/8' forstner bit and cleaned up with a chisel. I was only installing two of these at the time.

If I were using very many I would make a jig for my router for the mortising. A smaller hole must be drilled in the center of the workpiece to allow space for the screw head that this piece hangs on. The mortise has to be 1/8' deep minimum for this piece to sit flush with the surface. It won't hurt to go a little deeper as the screw the piece hangs on can be adjusted. The screws for attaching this piece are just shy of 5/8' long, so they would have to be shortened or changed if your workpiece thickness is much less than 3/4'.

I purchased 30 pairs of the 5/8' x 1-21/32' size for making MDF sign blanks for a local artist. As other reviewers indicated, these need to be recessed 1/8' in order to be flush with the surface that goes against the wall. I recommend making a router template for creating the recess. If a flat head screw is used for hanging, then you don't need to do any additional routing. If a button head screw is going to be used though, as part of a drywall anchor system for example, then you'll want to recess the area underneath the keyhole an additional 1/8' to allow clearance for the bigger screw head. Also note that these fittings include screws for mounting. I don't think that information was included in the product description.