Metallics J1503 Anchors Sprg Wing TogBt SlPh 1/8" #6 Trd 32 Lgt 4" (Jar 50)

Spring wing toggles like the J1503 are made for hollow substrates: you drill a hole large enough for the folded wings, push them through the cavity, and they spring open against the back face as you tighten the screw. That makes them the usual pick for drywall, hollow block, and lath where there is no stud or joist behind. They need open cavity space behind the wall to open, so they will not work in a solid or filled wall.

Each jar of the Metallics J1503 holds 50 assemblies, screws and spring wings together. The jar pack is the sensible unit for an electrician or MRO stockroom running repeated hollow-wall mounts rather than a single fixture.

No. Once the screw backs all the way out of a spring wing toggle, the wings drop off inside the wall cavity and are gone. Plan on a fresh J1503 for any remount, which is part of why it ships 50 to a jar. If you expect to remove and reinstall the same fixture repeatedly, a threaded hollow wall anchor that stays captive in the wall is the better choice.

That is exactly the application. The J1503 is catalogued as electrical fastening hardware, and a 1/8 inch #6-32 toggle with a 4 inch screw covers typical light fixture canopies, small boxes, straps, and raceway on hollow walls and ceilings. Match the screw length to your fixture thickness: the 4 inch screw gives plenty of reach, and excess length simply means the wing sits further back in the cavity.

The J1503 uses a slotted pan head, so it drives with a flat blade screwdriver or a slotted bit. Pull tension on the screw while you start it so the wings grab the back of the wall instead of spinning.