Metallics J1542 Anchors Sprg Wing TogBt 5/16" Trd 18 Lgt 5" (Jar 25)

The J1542 is a spring wing toggle bolt with a 5/16 inch diameter machine screw thread, 18 threads per inch, and a 5 inch screw length. The 5 inch length is what lets the bolt pass through the wall material and still leave enough thread for the wings to spring open and draw up behind it.

Spring wing toggle bolts like the J1542 are made for hollow substrates: drywall, lath and plaster, hollow concrete block, and hollow metal. The wings fold flat to pass through a drilled hole, then spring open inside the cavity and bear against the back face as you tighten. They do not work in solid concrete or solid brick, where you want a sleeve or wedge anchor instead.

No. The wings on this toggle need an open cavity to spring into, so solid concrete, solid brick, and grout-filled block are the wrong application no matter how deep the hole goes. For solid base material use a wedge anchor, sleeve anchor, or a drop-in with a 5/16 inch bolt instead.

Each jar holds 25 of the 5/16-18 x 5 inch spring wing toggle bolts. Metallics ships them in a jar rather than a carton, so an electrician or maintenance tech can keep the whole count on the cart without loose parts.

Yes. With the J1542 the hole has to clear the folded wings, not the 5/16 inch screw, so a toggle bolt always calls for a noticeably larger drilled hole than the bolt diameter. Fold the wings flat against the shank and use that dimension to pick the bit. The trade-off is that the hole stays oversized and the wings drop into the cavity if you back the bolt all the way out, so the fastener is not reusable in place.