Metallics J1511SS Strut Clamp 1 pc 3-1/2" - 3-1/2" (10)

The J1511SS is made of 18-8 stainless steel, both the machine screw and the spring wing toggle. 18-8 is the austenitic stainless grade normally specified where plated carbon steel anchors would rust, so it suits damp interiors, parking structures, coastal exposure and washdown areas. Carbon steel toggles are the cheaper choice for dry, conditioned interiors.

It is a hollow wall anchor, intended for block, wallboard and other hollow-base materials. The spring wings fold down to pass through the drilled hole, then snap open behind the wall and bear against the back face. That means you need clear cavity depth behind the wall for the wings to open. In solid concrete or grout-filled block there is no cavity, so a wedge or sleeve anchor is the right call instead.

The machine screw is 3 inches long. On a toggle, usable grip is the screw length minus the wall thickness and minus the space the folded wing needs, so a 3 inch screw covers typical single and double layer drywall plus the thickness of whatever you are fastening through. Measure your wall plus the fixture or strap thickness and keep well under 3 inches.

No. The J1511SS is not Buy American compliant and is not ARRA compliant, and its country of origin is recorded as multiple. If your contract carries a domestic-sourcing clause, this part will not clear it and you need a domestically produced stainless toggle instead.

The screw is cut at 20 threads per inch. That matters because the wing nut on a toggle is matched to the screw, so a replacement screw has to be the same diameter and 20 TPI or the wing will not thread on. Toggle bolts are sold as a matched two-part assembly for that reason.

Bolts and wings ship together in one package. Each piece is a complete two-part assembly, so there is nothing else to order to make the anchor work. You still drill the hole and supply whatever strap, clamp or bracket you are mounting.

Round head with a slotted drive. A flat blade screwdriver drives it, and the round head sits proud of the surface rather than countersinking, which is what you want when fastening a conduit strap, channel or bracket flat against a wall. If the application needs a flush finish, a round head is the wrong profile.

Yes, 50 each is the order minimum. Metallics also makes other sizes and quantities of the J15 spring wing toggle bolt available on request, so if your run needs a different screw length or a larger pack, it can be sourced.