Metallics JW1141SS Washers 1/4 X 1-1/2 Fender SS (Jar 100)

The JW1141SS is a 1/4 inch fender washer, so it goes over 1/4-20 bolts, screws, and threaded rod. Outside diameter is 1-1/2 inches, which is where the bearing surface comes from: six times the bolt diameter spreads the clamp load far wider than a standard 1/4 inch flat washer would.

These are stainless steel, so they're the right pick for exterior strut runs, rooftop equipment, pool rooms, and damp mechanical spaces where plated steel washers would bleed rust onto the finish. If you're pairing them, use stainless bolts and nuts as well so you aren't mixing metals at the joint.

A regular 1/4 inch flat washer has an OD under 3/4 inch, which concentrates the load on a small ring. The JW1141SS runs 1-1/2 inches across, so it bridges oversized or slotted holes, keeps a bolt head from pulling through sheet metal or drywall, and spreads load on soft or thin material. If the hole is tight and the substrate is solid steel, a standard flat washer is the simpler choice.

Yes. The 1/4 inch inside diameter clears 1/4 inch all-thread, and the 1-1/2 inch face gives a nut something broad to bear against where it meets channel nuts, slotted hanger brackets, or thin backing. For heavier suspended loads step up to 3/8 inch rod and the matching fender washer size instead.

100 pieces per jar, packed in a jar rather than a bag, which is easier to live with on a cart or gang box since it reseals and doesn't spill. Jar weight is 2.873 lbs.

It does. The wide 1-1/2 inch face distributes the load over the board face so a 1/4 inch toggle or anchor bolt doesn't crush through the paper. On a painted finish, a stainless washer won't rust-stain the wall later the way a plated one can.