Metallics JW119G Washers 3/8 X 1-1/4 Fender Galv (Jar 100)

The JW119G is a 3/8 inch fender washer, so it goes over 3/8 inch bolts, lags, threaded rod, or anchors. The 1-1/4 inch outer size is what makes it a fender washer rather than a flat washer, and that extra material is there to spread the load over a wider bearing surface.

Reach for a fender washer like the JW119G when the hole is oversized, the material is soft or thin (sheet metal, plywood, drywall, strut channel slots, fiberglass), or the fixture would otherwise pull through. The wide outer diameter gives a greater bearing surface and distributes the clamp load. For a snug hole in solid steel, a standard 3/8 flat washer is enough.

They are galvanized steel, which is the usual choice for exterior and damp interior work such as rooftop mechanical mounts, exterior conduit supports, and site fencing. For continuous saltwater exposure or where the fastener itself is stainless, match the washer to the fastener instead to avoid mixing metals.

Yes, that is a typical use. Electrical fastener stock like the galvanized JW119G fender washer is sized for 3/8 inch hardware, which is the common thread size for strut nuts, rod hangers, and trapeze supports, and the wide washer bridges the open slot in channel so the nut does not pull into it.

They ship 100 washers to a jar, and the jar weighs 2.01 lbs. The jar format keeps them together on a service truck or in a gang box rather than loose in a bag, which is why it is a common MRO and electrical shop stock item.